20 Best Under Sink Liner [2024]

Are you looking for the best under sink liner? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling under sink liner.

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# Preview Product
1 S&T INC. Under Sink Mat, Water-Resistant and Non Adhesive Plastic Shelf Liner, Charcoal, 24 in. x 48... S&T INC. Under Sink Mat, Water-Resistant and Non Adhesive Plastic Shelf Liner, Charcoal, 24 in. x...
2 Gorilla Grip Reusable Waterproof Under Sink Mat Liner, Slip Resistant, Non-Adhesive, Absorbent Mats... Gorilla Grip Reusable Waterproof Under Sink Mat Liner, Slip Resistant, Non-Adhesive, Absorbent...
3 Famous Rhino Under Sink Mat - Kitchen Cabinet Mat, Adjustable, Easy to Clean, Liner Protector for... Famous Rhino Under Sink Mat - Kitchen Cabinet Mat, Adjustable, Easy to Clean, Liner Protector for...
4 WeatherTech SinkMat Waterproof Under The Sink Cabinet Protection Mat, 34 by 22 Inches, Black WeatherTech SinkMat Waterproof Under The Sink Cabinet Protection Mat, 34 by 22 Inches, Black
5 Under The Sink Mat,Cabinet Mat – Absorbent/Waterproof – Protects Cabinets, Premium Shelf Liner,... Under The Sink Mat,Cabinet Mat – Absorbent/Waterproof – Protects Cabinets, Premium Shelf...
6 Resilia Premium Under The Sink Mat- Large Universal Size, Cut to Fit Cabinets, Shelf & Drawer... Resilia Premium Under The Sink Mat- Large Universal Size, Cut to Fit Cabinets, Shelf & Drawer...
7 GridMat® Premium Thick Under The Sink Mat Cabinet Liner, Precision Custom Fit With Exclusive... GridMat® Premium Thick Under The Sink Mat Cabinet Liner, Precision Custom Fit With Exclusive...
8 Drymate Premium Under The Sink Mat (24” x 29”), Cabinet Protection Mat, Shelf Liner -... Drymate Premium Under The Sink Mat (24” x 29”), Cabinet Protection Mat, Shelf Liner -...
9 Eapele Under Sink Mat Kitchen Cabinet Tray, 34' x 22', Flexible Waterproof Silicone Made, Hold up to... Eapele Under Sink Mat Kitchen Cabinet Tray, 34" x 22", Flexible Waterproof Silicone Made, Hold up...
10 Xtreme Mats Under Sink Bathroom Cabinet Mat, Pick Your Size, 28' 1/4 x 19 1/4, Waterproof Cabinet... Xtreme Mats Under Sink Bathroom Cabinet Mat, Pick Your Size, 28" 1/4 x 19 1/4, Waterproof Cabinet...
11 BASIN Premium Silicone Under Sink Mat - Holds Over 1.5 Gallons - Large Silicone Waterproof Mat -... BASIN Premium Silicone Under Sink Mat - Holds Over 1.5 Gallons - Large Silicone Waterproof Mat -...
12 Easy Liner Under-the-Sink Liner, Non-Adhesive, White, 27 Inches x 4 Feet (280741) Easy Liner Under-the-Sink Liner, Non-Adhesive, White, 27 Inches x 4 Feet (280741)
13 DELAM Under Sink Mat for 36” Cabinet, Hold Up to 2.5 Gallons, Large Silicone Waterproof Mat,... DELAM Under Sink Mat for 36” Cabinet, Hold Up to 2.5 Gallons, Large Silicone Waterproof Mat,...
14 Xtreme Mats Under Sink Kitchen Cabinet Mat, Pick Your Size, 34' 1/4 x 22 1/4, Waterproof Cabinet... Xtreme Mats Under Sink Kitchen Cabinet Mat, Pick Your Size, 34" 1/4 x 22 1/4, Waterproof Cabinet...
15 OMAC New Under The Sink Mat | Trimmable Waterproof Raised Edge Cabinet Liner Protector for Kitchen... OMAC New Under The Sink Mat | Trimmable Waterproof Raised Edge Cabinet Liner Protector for...
16 Duck Clear Classic Easy 285865 Under-The-Sink Liner, 24 in x 4 ft Roll, Black, 8 Sq Duck Clear Classic Easy 285865 Under-The-Sink Liner, 24 in x 4 ft Roll, Black, 8 Sq
17 OMAC New Under The Sink Mat | Trimmable Waterproof Raised Edge Cabinet Liner Protector for Kitchen... OMAC New Under The Sink Mat | Trimmable Waterproof Raised Edge Cabinet Liner Protector for...
18 AECHY Under Sink Mat, 34' x 22' Silicone Under Sink Liner, Under Kitchen Sink Mat with Unique Drain... AECHY Under Sink Mat, 34" x 22" Silicone Under Sink Liner, Under Kitchen Sink Mat with Unique...
19 Under the Sink Mat Liner, Liquid Asbsorbing Mat. Under-Sink Organizers, Abaorbe Liquid to Protect... Under the Sink Mat Liner, Liquid Asbsorbing Mat. Under-Sink Organizers, Abaorbe Liquid to Protect...
20 LotFancy Under Sink Mat for Kitchen, 36' x 36', with Absorbent Fabric and Anti-slip Waterproof... LotFancy Under Sink Mat for Kitchen, 36" x 36", with Absorbent Fabric and Anti-slip Waterproof...
Bestseller No. 1
S&T INC. Under Sink Mat, Water-Resistant and Non Adhesive Plastic Shelf Liner, Charcoal, 24 in. x 48...
  • One 24 in. x 48 in. S&T INC. Water-Resistant Non Adhesive Plastic Charcoal Shelf Liner
  • Under sink mat protects kitchen cabinets from water damage, scuffs and spills
  • Place cabinet liner under sink for kitchen or bathroom organization and cabinet protection
  • Plastic under sink liner is water-resistant and easy to wipe clean
  • Easily cut liner to fit your exact cabinet measurements
Bestseller No. 2
Gorilla Grip Reusable Waterproof Under Sink Mat Liner, Slip Resistant, Non-Adhesive, Absorbent Mats...
  • Waterproof Protection: maximum protection from leaks and spills, big and small; the top layer is constructed of ultra absorbent felt fabric that acts...
  • Won't Slip or Slide: thick, slip-resistant backing helps the mat stay firmly in place while preventing spills from reaching your shelf
  • Non Adhesive: reuse the mat as needed; great for kitchens, bathrooms, or utility rooms
  • Machine Washable: machine wash as often as needed; always air dry; do not put in dryer; mat is constructed with premium materials
  • A Custom Fit: great for any size cabinet or shelf; available in many standard under-the-sink sizes, mats can be easily trimmed with a household...
SaleBestseller No. 3
Famous Rhino Under Sink Mat - Kitchen Cabinet Mat, Adjustable, Easy to Clean, Liner Protector for...
  • ✔️ PREMIUM DESIGN & MATERIALS- Designed to look impressive while protecting your cabinets. Your cabinets and floor interiors are safe with Famous...
  • ✔️ ADJUSTABLE AND TAILORED-MADE - Under the sink mat measures 34 Inches Wide by 22 1/2" Deep. Fits Standard 36 Inch Wide Cabinets. Width can be...
  • ✔️ EASY TO CUT & FLEXIBLE SILICONE - Under sink liner easily folds to fit into cabinets even if you have pipes or other obstacle in it. Famous...
  • ✔️ MONEY & TIME SAVER - protects your cabinet from damage caused by plumbing leaks, chemical & product spills, stains, scratches, and garbage...
  • ✔️ MULTIPURPOSE - can be used as a PET Feeding Mat or dog bowl mat (large surface, with raised edge will keep food and water on the mat) or can be...
Bestseller No. 4
WeatherTech SinkMat Waterproof Under The Sink Cabinet Protection Mat, 34 by 22 Inches, Black
  • Measures 34 ¼ inches wide by 22 ½ inches deep to fit a standard 36-inch wide cabinet
  • Width can be trimmed down to 30 ¾ or 28 inches, depth can be trimmed down to 20 ¾ inches
  • 100 percent designed, engineered, and manufactured in the USA
  • Ideal for kitchens, bathrooms or utility rooms
  • Easy to wipe down and clean
Bestseller No. 5
Under The Sink Mat,Cabinet Mat – Absorbent/Waterproof – Protects Cabinets, Premium Shelf Liner,...
  • Our mat absorb liquids and absorb moisture. The bottom can prevent liquid from leaking, and can effectively prevent liquid from seeping into the...
  • Our mat can protect cabinets.Protects Cabinet and under the sink and drawers from leak and spills.The Under The Sink Mat traps and contains the mess....
  • Easy to clean, washable and durable, machine washable or simply scrubbed with soap, hoses detached and hanged. Do not bleach.
  • Easy to install, universal fit for easy cutting to accommodate scissors and materials that won't wear out. Combine multiple mats for any cabinet.
  • Our mats are made of environmentally friendly materials.
Bestseller No. 6
Resilia Premium Under The Sink Mat- Large Universal Size, Cut to Fit Cabinets, Shelf & Drawer...
  • PROTECTS YOUR CABINETS AND FLOORS: This easy to use, anti-stain, chemical resistant plastic mat will protect the wood under your sink against unwanted...
  • NON-SLIP GRIP: Each mat features a unique embossed diamond plate pattern that provides traction to prevent slips and objects from sliding while...
  • CUSTOMIZABLE SIZE: Made of flexible plastic that cuts easily for customized sizes; Great to use as a drawer, shelf, fridge, pantry or cabinet liner;...
  • ECO-FRIENDLY MATERIAL: Our products use as much recycled materials as we can to maintain product quality; Does not contain any Prop 65 regulated...
  • PROUDLY MADE IN THE USA: Resilia is a family-owned and operated company; All of our products are proudly made here in the USA in our state of the art...
Bestseller No. 7
GridMat® Premium Thick Under The Sink Mat Cabinet Liner, Precision Custom Fit With Exclusive...
  • LET THE GridMat CUTTING SYSTEM BE YOUR GUIDE: The gridlines on the back of the mat are spaced Exactly 1-Inch Apart. Use the lines as a guide to hand...
  • BUILT-IN RULER: The back of the GridMat has our exclusive, Built-In Ruler to make sizing your mat easy. No need to take a measuring tape...
  • PROTECT YOUR CABINETS AND SHELVES: The GridMat is made of the highest quality materials to insure the ultimate protection of your cabinets and...
  • PREMIUM THICK FELT FOR LOOKS AND PROTECTION: The GridMat is made of Premium Thick Felt which gives a gorgeous look to your cabinets and shelves, and...
  • 100% WATERPROOF: The GridMat features a 100% Waterproof PVC Layer which provides the ultimate barrier and prevents water damage to your cabinet and...
SaleBestseller No. 8
Drymate Premium Under The Sink Mat (24” x 29”), Cabinet Protection Mat, Shelf Liner -...
  • PROTECTS CABINETS FROM LEAKS AND SPILLS: The Drymate Under The Sink Mat traps and contains the mess! Our mat is designed to protect your expensive...
  • ABSORBENT FABRIC, WATERPROOF BACKING (SLIP-RESISTANT): Patented Drymate material absorbs and contains liquids and wicks away moisture. The waterproof...
  • EASY TO INSTALL (UNIVERSAL/CUSTOM FIT): The Drymate mat will be a great fit for any size cabinet or shelf. Available in two standard under-the-sink...
  • EASY TO CLEAN (MACHINE WASHABLE): When you get a spill on your mat, you can easily clean it! Simply machine wash or rinse off and scrub with soap. For...
  • (MADE IN THE USA) DURABLE & LIGHTWEIGHT MATERIAL: The absorbent top layer of our mat consists of a non-woven polyester fabric and is made from over...
SaleBestseller No. 9
Eapele Under Sink Mat Kitchen Cabinet Tray, 34" x 22", Flexible Waterproof Silicone Made, Hold up to...
  • 34" x 22"---Extra-large size to cover wide surfaces under the sink. Please note it is essential to ensure that it is compatible with the particular...
  • Holds up to 3.3 Gallons of Leaky Water---The lip of the mat is about 1" in height,making sure to contain any form of liquid. No sliding around,...
  • Flexible Silicone Material--- Made of thick pliable silicone, which is water-resistant that protects your cabinet under the sink from leakage,...
  • Protect Your Under-sink Cabinet from Moisture---maintaining good hygienic conditions in the kitchen is highly important for the health of the entire...
  • Package Include---1pc 34"x22" under sink cabinet mat, 2pcs soft silicone brush for mat cleaning. If there are any other concerns, don't hesitate to...
Bestseller No. 10
Xtreme Mats Under Sink Bathroom Cabinet Mat, Pick Your Size, 28" 1/4 x 19 1/4, Waterproof Cabinet...
  • American Company headquartered in FLORIDA. 📞 Available 8 am - 5 pm EST to answer any questions. Contact us by phone or send us a message anytime!
  • The ORIGINAL Under Sink Cabinet Mat; HOLDS UP TO - 3.3 GALLONS; WATER SENSOR SOLD SEPARATELY; CHECK for plumbing coming through the bottom of your...
  • FLEXIBLE & STRONG - sturdy enough to support gallons of water yet flexible enough to install through small cabinet openings and open back up to its...
  • LIFETIME LIMITED WARRANTY - against product defects; Great for vacation homes and rental properties
  • FORM FITTED DESIGN - installs easily beneath your sink and removes quickly for cleaning; PROTECTS CABINETS - from damage caused by plumbing leaks,...
SaleBestseller No. 11
BASIN Premium Silicone Under Sink Mat - Holds Over 1.5 Gallons - Large Silicone Waterproof Mat -...
  • Gallon leak protection for over 1.5 gallons - Holds over to 1.5 gallons of water, buying you more time to address a leak. Flexible lip makes draining...
  • Smooth surface for easy cleaning - The smooth silicone surface makes wiping up spills a breeze. No ridges, fabric or textured surfaces that make it...
  • Flexible silicone - Easier to install in all cabinets. Mat easily folds to fit into cabinets with a center post in the frame. Will always lie...
  • Premium materials & design - Designed to look good while protecting your cabinets. Basin is made from premium silicone.
  • Many uses - Sized to fit in your cabinet, but can be used for crafts, pets, and many more activities to prevent messes and spills!
Bestseller No. 12
Easy Liner Under-the-Sink Liner, Non-Adhesive, White, 27 Inches x 4 Feet (280741)
  • Non-adhesive smooth top lets you slide objects across surface with ease
  • Grip bottom provides cushioning and keeps items in place without additional adhesive
  • Easy to wipe surface allows for quick clean up
  • Machine washable in cold water
  • 27 inches x 4 feet; Includes a measuring tape
Bestseller No. 13
DELAM Under Sink Mat for 36” Cabinet, Hold Up to 2.5 Gallons, Large Silicone Waterproof Mat,...
  • 【Upgraded 1 Inch Lip Holds Up To 2.5 Gallons Of Water】34.25 x 22 x 1 inches under sink mat is designed to fit standard 36 inch kitchen and...
  • 【Protect Cabinet From Water Damage And Spills Stained】It’s a life saver for your under sink. When you have a disposal, P-trap and multiple water...
  • 【Flexible, Lays perfectly Flat, No Adhesive & No Skidding】DELAM kitchen sink mats are made of high quality silicone, it is durable and pliable,...
  • 【Stuffs Placed Stably & Keep Organized, Easy To Install & Clean】Shipped folded in box, but sprung into shape when unpacked. Put it in your...
  • 【Multi-Function Heavy Duty Waterproof Silicone Mat】NOTE: If your sink has hot and cold water supply pipes coming in through the bottom of the...
Bestseller No. 14
Xtreme Mats Under Sink Kitchen Cabinet Mat, Pick Your Size, 34" 1/4 x 22 1/4, Waterproof Cabinet...
  • American Company headquartered in FLORIDA. 📞 Available 8 am - 5 pm EST to answer any questions. Contact us by phone or send us a message anytime!
  • The ORIGINAL Under Sink Cabinet Mat; HOLDS UP TO - 3.3 GALLONS; WATER SENSOR SOLD SEPARATELY; CHECK for plumbing coming through the bottom of your...
  • FLEXIBLE & STRONG - sturdy enough to support gallons of water yet flexible enough to install through small cabinet openings and open back up to its...
  • LIFETIME LIMITED WARRANTY - against product defects; Great for vacation homes and rental properties
  • FORM FITTED DESIGN - installs easily beneath your sink and removes quickly for cleaning; PROTECTS CABINETS - from damage caused by plumbing leaks,...
Bestseller No. 15
OMAC New Under The Sink Mat | Trimmable Waterproof Raised Edge Cabinet Liner Protector for Kitchen...
  • PROTECTS YOUR CABINETS AND FLOORS: This easy to use, resistance TPE Rubber mat will protect the wood under your sink against from dirt, water, soap,...
  • NON-SLIP GRIP: Each mat features a smart and modern design that provides traction to prevent slips and objects from custom raised edges for ultimate...
  • CUSTOMIZABLE SIZE: Made of flexible that cuts easily for customized sizes; Great to use as a drawer, shelf, fridge, pantry or cabinet liner!
  • FEATURES: The Sink Mat with Raised Edges is the perfect accessory to Waterproof under your sink, protect it from any leaking or dirt coming from the...
  • ADVANTAGES: We are located and operated in TEXAS, USA and we will be shipping your orders from our TEXAS, USA warehouse. We ship all the paid (till...
Bestseller No. 16
Duck Clear Classic Easy 285865 Under-The-Sink Liner, 24 in x 4 ft Roll, Black, 8 Sq
  • Non-adhesive surfaces for easy installation and repositioning
  • Non-slip bottom preventing liner and items from sliding
  • Water-resistant to protect both indoor and outdoor applications
  • Easy-to-wipe surface allowing for easy and quick clean up
  • Extra-large size to cover wide surfaces in your home
Bestseller No. 17
OMAC New Under The Sink Mat | Trimmable Waterproof Raised Edge Cabinet Liner Protector for Kitchen...
  • PROTECTS YOUR CABINETS AND FLOORS: This easy to use, resistance TPE Rubber mat will protect the wood under your sink against from dirt, water, soap,...
  • NON-SLIP GRIP: Each mat features a smart and modern design that provides traction to prevent slips and objects from custom raised edges for ultimate...
  • CUSTOMIZABLE SIZE: Made of flexible that cuts easily for customized sizes; Great to use as a drawer, shelf, fridge, pantry or cabinet liner!
  • FEATURES: The Sink Mat with Raised Edges is the perfect accessory to Waterproof under your sink, protect it from any leaking or dirt coming from the...
  • ADVANTAGES: We are located and operated in TEXAS, USA and we will be shipping your orders from our TEXAS, USA warehouse. We ship all the paid (till...
Bestseller No. 18
AECHY Under Sink Mat, 34" x 22" Silicone Under Sink Liner, Under Kitchen Sink Mat with Unique Drain...
  • 【PERFECTLY FITS 36” CABINETS】: The size of the under sink mat is 34” x 22” x 0.67”. AECHY large under sink tray is designed for fit most...
  • 【UNIQUE DRAIN HOLE DESIGN】: Unique patented drain port design, allows you to drain the leaking water easily without taking out the sink cabinet...
  • 【STABLE STRUCTURE & FLEXIBLE】: High-quality silicone with hexagonal texture increase the sense of design while making the under sink cabinet mat...
  • 【WATERPROOF & EASY TO CLEAN】: The waterproof material perfectly avoids the risk of your cabinet being corroded by water leakage and liquid...
  • 【MULTIPURPOSE】: AECHY 34” waterproof mat is not only suitable for kitchen cabinets, but also suitable for bathroom cabinets, pets, crafts, and...
Bestseller No. 19
Under the Sink Mat Liner, Liquid Asbsorbing Mat. Under-Sink Organizers, Abaorbe Liquid to Protect...
  • Made of water and liquid absorbing material, BPA free, enviromental friendly and safe.
  • Absorb the leaking water and spill liquid to protect the cabinet with waterproof backing.
  • Easy to install, simply measure cabinet and cut the extra edges with scissors or knife and lay.
  • Easy to clean. when you get spilled on your mat, put or hang in a well-ventilated area to get mat dry and put back.
  • Satisfactory guarantee. 100% money back if you are not satisfied and no need to send the mat back.
Bestseller No. 20
LotFancy Under Sink Mat for Kitchen, 36" x 36", with Absorbent Fabric and Anti-slip Waterproof...
  • ABSORBENT & WATERPROOF: Our under sink mats have a top layer of polyester fabric that absorbs liquids, wicks away moisture, and a waterproof TPR...
  • MULTI-USE PROTECTION MAT: Our sink liner can be placed under your kitchen sink, bathroom vanity, under potted plants or even in entryways
  • EASY TO USE: Our under cabinet liners come in 6 different sizes and can be easily trimmed with scissors to fit your cabinet or space. The anti-slip...
  • EASY TO CLEAN: The shelf mat is machine washable, can be vacuumed, spot scrubbed with water and soap, hosed off, and more. Air dry. Do not bleach
  • DURABLE AND REUSABLE: Our waterproof mats are designed for extended use with excellent anti-tear and durable fabric, no adhesive, toxic free...

Having trouble finding a great under sink liner?

This problem is well understood by us because we have gone through the entire under sink liner research process ourselves, which is why we have put together a comprehensive list of the best under sink liners available in the market today.

After hours of searching and using all the models on the market, we have found the best under sink liner for 2023. See our ranking below!

How Do You Buy The Best Under Sink Liner?

Do you get stressed out thinking about shopping for a great under sink liner? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching under sink liner, which is why we have assembled a comprehensive list of the greatest under sink liner available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for under sink liner that you consider buying. Your questions might include the following:

  • Is it worth buying an under sink liner?
  • What benefits are there with buying an under sink liner?
  • What factors deserve consideration when shopping for an effective under sink liner?
  • Why is it crucial to invest in any under sink liner, much less the best one?
  • Which under sink liner are good in the current market?
  • Where can you find information like this about under sink liner?

We’re convinced that you likely have far more questions than just these regarding under sink liner, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for under sink liner, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible under sink liner. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an under sink liner buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available under sink liner currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of under sink liner has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an under sink liner?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your under sink liner.
  5. Customer Ratings: Number ratings grade under sink liner objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their under sink liner.
  7. Product Quality: You don’t always get what you pay for with an under sink liner, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an under sink liner is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining under sink liner information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding under sink liner is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: How to protect a cabinet under a sink?

A: Soft silicone is PVC-free and provides cushion to protect sink,glasses and dishes from scratching and chipping Feet elevate mat to allow for water flow and aeration Pattern allows for cutting a hole to accommodate most drain openings Small Sink Mat is the perfect size for most double sinks

Q: How to mount under cabinet sink?

A: and measuring out the space—making sure you make allowances for pipes under the sink. Vertical shelving and behind-the-door storage options make it easier to use every inch of space and keep everything tidy. And perhaps the most genius tip—install some …

Q: How to organize under the kitchen sink cabinet?

A: How to organize under the kitchen sink. Empty cabinet -Empty everything out of the cabinet beneath the kitchen sink. Disinfect – Wipe down the entire cabinet with a disinfectant. The bottom sides, even pipes and cords. I feel like moist (hate that word!) areas are a breeding ground for mold and bacteria so disinfect everything first.

Q: How to buy an undermount sink?

A: Zero reveal ensures that the edge of the countertop is flush with the opening of the sink. Positive reveal ensures that some of the sink’s rim is visible past the edge of the countertop. Negative reveal conceals the sink’s rim entirely beneath the countertop,so the countertop edge overhangs.