Silicone Trays Sized to the Cabinet, What the Raised Edge Really Holds, and the Slow Leak a Mat Can Hide
5 picks compared · prices, ratings and stock checked October 12, 2026
Our Top Pick
For a standard kitchen sink base, the SIKADEER Silicone Under Sink Mat 34 x 22 in, which comes in 16 sizes and trims around pipes. For a small bathroom vanity, the Aisslro Silicone Under Sink Mat 22 x 19 in. Set a battery leak sensor on whichever mat you buy.
4.7 on Amazon · 10,906 ratings
Quick answer
The best under sink mat is a silicone tray with a raised edge, sized just under the cabinet floor and paired with a leak sensor; for a standard kitchen sink base, that is the SIKADEER Silicone Under Sink Mat 34 x 22 in, rated 4.7 stars across 10,906 Amazon ratings. If you want to know what a mat holds, pick one that states its edge: a 34 x 22 in mat with a 0.7 in lip, like the GORILLA GRIP, holds about 2.3 gallons at the brim. A mat catches drips and spills; it does not stop a leaking supply line.
Every pick below is currently stocked — ratings and stock read from Amazon on 12 October 2026.
Best for: A standard kitchen sink base, or any cabinet where one of its 16 sizes matches the inside floor
Listing verified 13 Oct 2026
Best for: A kitchen sink base where you want a known edge height and a lip that holds its shape
Listing verified 13 Oct 2026
Best for: A cabinet whose inside floor is smaller than 34 x 22 in but matches one of the listed trim sizes
Listing verified 13 Oct 2026
Best for: A bathroom vanity or a narrow cabinet with an inside floor of about 22 x 19 in
Listing verified 13 Oct 2026
Best for: Spot protection under a trap, disposal or filter in a cabinet where pipes rise through the floor
Listing verified 13 Oct 2026
How this page was made: we compare the current Amazon listings, the makers' published specs and what verified buyers report, then rank by fit for the job. Ratings, review counts and stock are read from Amazon and dated. We earn a commission on purchases through our links; it does not change the order. Reviewed by Marcus Reed, IICRC-certified Water Restoration Technician.
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Each pick in detail: what the listing states, what buyers report, and where it falls short.
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Listing verified 13 Oct 2026
See it on Amazon ↗Best Overall
Quick Verdict
SIKADEER Silicone Under Sink Mat 34 x 22 in: 16 listed sizes and a press-to-pour edge, though its edge height is not stated.
Key Specs
Size (this listing)
34 x 22 in
Other sizes (stated)
16 sizes in total
Material (stated)
Food-grade, BPA-free silicone
Edge height
Not stated on this listing; raised edges are described
Trimming (stated)
Can be trimmed around pipes or corners
Emptying (stated)
Press the flexible edge down to pour water out
Pros
Cons
Suited to
A standard kitchen sink base, or any cabinet where one of its 16 sizes matches the inside floor
Our take
SIKADEER's strength is fit. Sixteen sizes means you can match the inside of the cabinet rather than forcing a 34 x 22 in mat into a small vanity, and the listing's advice to drop to the smaller size when you fall between two is right: a mat larger than the floor rides up the walls, and the rim no longer sits flat. Measure inside the box, wall to wall and back wall to face frame. The press-down edge is a small, useful detail, because you can pour a spill into a bucket without lifting a loaded mat. The missing number is edge height, which is what decides how much water it holds.
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Listing verified 13 Oct 2026
See it on Amazon ↗Best Stated Edge Height
Quick Verdict
GORILLA GRIP Silicone Under Sink Mat 34 x 22 in: a stated 0.7 in reinforced lip, so you know it holds a little over 2 gallons at most.
Key Specs
Size (this listing)
34 x 22 in
Lip height (stated)
0.7 in, reinforced with added strips
Material (stated)
Waterproof silicone, third-party tested BPA free
Grip (stated)
Raised silicone grip dots on top
Cleaning (stated)
Dishwasher safe
Other sizes (stated)
Available in many sizes
Pros
Cons
Suited to
A kitchen sink base where you want a known edge height and a lip that holds its shape
Our take
This is the one listing here that lets you do the capacity math with a full set of numbers. A 34 x 22 in mat covers 748 sq in, and a 0.7 in lip over that area comes to about 2.3 gallons (748 x 0.7 ÷ 231) if the cabinet floor were perfectly level and the mat filled to the brim. Real capacity is lower, since the lip itself takes up some of the area and few cabinet floors are level. Two gallons is plenty for a dripping slip nut or a tipped bottle of cleaner. It buys almost no time against a failed supply line, which is why a leak sensor belongs on top of this mat.
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Listing verified 13 Oct 2026
See it on Amazon ↗Best Trim-to-Fit
Quick Verdict
Wohbay Silicone Under Sink Mat 34 x 22 in: one sheet that trims to eight listed sizes, with no stated edge height.
Key Specs
Size (as shipped)
34 x 22 in
Trimmed sizes (stated)
30 x 22, 30 x 20, 30 x 15, 34 x 20, 28 x 15, 28 x 20 and 28 x 22 in
Trimming (stated)
Along the raised edge, to fit pipes or corners
Material (stated)
Silicone
Edge height
Not stated on this listing
Cleaning (stated)
Rinse with water; dishwasher use is not mentioned
Pros
Cons
Suited to
A cabinet whose inside floor is smaller than 34 x 22 in but matches one of the listed trim sizes
Our take
Wohbay solves a common sizing problem with one sheet. It ships at 34 x 22 in and, per the listing, trims along the raised edge to seven smaller sizes from 34 x 20 in down to 28 x 15 in, which covers many vanities and shallow sink bases. Measure the cabinet floor first and choose the trimmed size just under it. What the text leaves out is edge height, and whether the cut side keeps a full rim, so check the photos before you cut and test the fit with the mat in place. Its own description, a mat that helps contain minor leaks and drips, is a more honest summary of any under-sink mat than most listings give.
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Listing verified 13 Oct 2026
See it on Amazon ↗Best for Bathroom Vanities
Quick Verdict
Aisslro Silicone Under Sink Mat 22 x 19 in: a small mat with a stated 0.59 in edge, made for bathroom vanities.
Key Specs
Size (this listing)
22 x 19 in
Edge (stated)
0.59 in raised edges with 3 mm thick sides
Material (stated)
BPA-free, heat-resistant silicone
Underside (stated)
Non-slip bottom
Trimming (stated)
Around pipes, garbage disposals and water filters
Other sizes (stated)
Multiple sizes
Pros
Cons
Suited to
A bathroom vanity or a narrow cabinet with an inside floor of about 22 x 19 in
Our take
Bathroom vanities are where full-size mats fail on fit, and this 22 x 19 in mat is cut for them. The 0.59 in edge is stated, so the arithmetic is quick: 22 x 19 in is 418 sq in, and at 0.59 in deep that is about 1.1 gallons at the brim (418 x 0.59 ÷ 231). That handles a tipped bottle or a weeping trap. If your supply lines rise through the cabinet floor rather than coming out of the back wall, you will be cutting into a small mat, so make each hole as tight as the pipe allows and mark it with the mat in place before you cut.
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Listing verified 13 Oct 2026
See it on Amazon ↗Best Rigid Plastic Trays
Quick Verdict
Emsiok Plastic Under Sink Drip Trays 13.8 x 10.8 in: rigid spot trays for under the trap and valves, not whole-cabinet cover.
Key Specs
Size (stated)
13.8 x 10.8 in per tray, three trays
Material (stated)
Plastic
Edge
Raised edges; height not stated on this listing
Joining (stated)
A buckle on one side locks into the next tray
Surface (stated)
Dotted, non-slip texture
Pros
Cons
Suited to
Spot protection under a trap, disposal or filter in a cabinet where pipes rise through the floor
Our take
A rigid drip tray is a different tool from a mat. Instead of lining the whole cabinet, you place a tray where water is most likely to fall: under the trap's slip nuts, under the shutoff valves, under a filter housing. Three trays of 13.8 x 10.8 in cover about 447 sq in in total, so they protect spots, not the floor. That trade suits a cabinet with pipes coming up through the base, where a mat would need cutting. Because the trays stay stiff, you can lift one out level and see how much has dripped since you last looked, which helps when you are tracking a slow leak.
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What to know before you buy.
Most under-sink mats sold now are silicone, and four of the five picks here are. Silicone bends through a narrow cabinet door, lies flat on the floor, and can be trimmed according to most of these listings; some makers also say it is dishwasher safe. Rigid plastic trays, like the Emsiok set, hold their shape, so you can lift one out level and carry the water away, but they come in fixed sizes. Flat rubber or fabric-backed liners also sell as under-sink mats. A flat liner with no raised edge only protects the finish from scratches and small drips, and an absorbent fabric liner holds water in the fabric, out of sight, which is the opposite of what you want under a sink. Whatever the material, choose a raised edge.
Open the doors and measure the cabinet floor itself: side wall to side wall, and back wall to the inside of the face frame. The door opening is narrower than the box behind it, so a mat sized to the opening leaves bare strips at both ends. Most mats on this page are 34 x 22 in, while a small vanity needs something nearer 22 x 19 in. When you land between two sizes, take the smaller, as the SIKADEER and Aisslro listings both advise, because a mat wider than the floor curls up the walls and its rim no longer forms a closed tray. Then note where the pipes enter. Lines that come out of the back wall cause no trouble, while pipes rising through the floor mean cutting the mat or using small rigid trays around them.
Capacity is simple arithmetic, provided the listing gives an edge height. Multiply length by width by edge height in inches, then divide by 231 to get gallons. GORILLA GRIP's 34 x 22 in mat with a 0.7 in lip works out to about 2.3 gallons at the brim, and Aisslro's 22 x 19 in mat with a 0.59 in edge comes to about 1.1 gallons. Treat both as ceilings, since cabinet floors are rarely level and a trimmed notch lets water out early. Several listings promise that a mat holds gallons without giving any edge height, which leaves you nothing to check. A couple of gallons is a long runway for a dripping trap or a spilled cleaner. A supply line that lets go at full house pressure fills any of these mats quickly.
A mat works by keeping water off the cabinet floor, and that same trait can keep you from seeing it. A slow drip lands on the mat behind the bottles, sits in the tray, and evaporates into a closed cabinet. Nothing stains, nothing swells, and the leak runs for weeks. The mat also covers only the floor. The back panel, the side panels and the wall behind them stay bare, and EPA notes that hidden mold can grow inside walls around leaking or condensing pipes. Two habits fix this. Set a battery leak sensor on the mat, at the low corner or under the trap, so the first water that collects sets it off. Then empty the cabinet and look at the mat once a month.
Most under-sink water comes from a handful of joints, and a monthly look takes two minutes with a flashlight and a dry paper towel. Start at the shutoff valves and the nuts where the supply lines attach, then follow each line up to the faucet; replace any line that bulges, kinks or shows rust at a fitting. Wipe under the slip nuts on the P-trap and at the joint where the trap meets the wall drain. A weeping slip nut often needs nothing more than snugging by hand. Check the dishwasher hose and the garbage disposal too, if you have them. EPA WaterSense suggests examining faucet gaskets and pipe fittings for water on the outside of the pipe, which is exactly what the paper towel shows you.
Pull the mat and look at the cabinet floor whenever you find water on it. A floor that is soft, swollen, stained dark or smells musty has been wet for a while, and mold may be growing in or under it. EPA says to dry water-damaged areas within 24 to 48 hours to prevent mold growth, and notes that absorbent materials that become moldy may have to be thrown away; swollen particleboard is hard to save. Its cleanup guidance puts moldy areas under about 10 square feet within reach of most homeowners, and a 34 x 22 in cabinet floor is about 5.2 square feet. Mold that has spread into the wall or the subfloor below is a bigger job. If the cabinet is wet now, wait on the mat: fix the leak, dry the floor, confirm it with a moisture meter, then line it.
YesFor spills and small drips, as long as you still look under the sink.
A silicone mat with a raised edge keeps cleaner spills and a weeping trap off the cabinet floor, which is often particleboard that swells when wet. It is not leak detection, though, because water sitting in the tray stays out of sight. Pair the mat with a leak sensor and a monthly check.
Buy the size just under your cabinet's inside floor, measured wall to wall and from the back wall to the face frame. Most kitchen mats on this page are 34 x 22 in, and the Aisslro 22 x 19 in suits smaller vanities.
If you fall between sizes, go smaller, because a mat that rides up the walls loses its tray shape. Wohbay's mat trims down to seven listed smaller sizes.
YesSilicone mats can usually be trimmed, and the SIKADEER, Wohbay and Aisslro listings all say so.
Every cut opens the tray at that spot, though, so water that reaches it runs onto the cabinet floor. Mark each hole with the mat in place, cut the smallest opening the pipe allows, and keep cuts away from the low corner where water collects.
It can, if the mat goes down on a damp floor or a leak gets under it through a cut or over the rim. The mat does not cause mold, but it can hold moisture against the wood where you cannot see it.
Make sure the cabinet floor is dry before lining it, and lift the mat whenever you find water on it. EPA puts it plainly: the key to mold control is moisture control.
An under sink drip tray is usually a rigid plastic tray placed under one leak point, such as the trap or the shutoff valves, rather than a mat that lines the whole cabinet.
The Emsiok set is three 13.8 x 10.8 in trays that lock together. Trays suit cabinets with pipes through the floor, since they sit around the pipes instead of being cut to fit them.
Many are, but check the listing for the exact mat. SIKADEER and GORILLA GRIP both say their mats are dishwasher safe, while Wohbay's listing mentions rinsing with water only.
A 34 x 22 in mat is large for a home dishwasher, so rinsing it in a tub or wiping it down may be easier. Let it dry fully before it goes back in the cabinet.
Call (888) 840-6512. The line is answered 24 hours a day, seven days a week, and connects you with an IICRC-certified water damage restoration company that serves your area. A recorded menu picks up first: choose water damage or mold, key in your 5-digit ZIP code, and hold through the short silence while the call is passed to the company.
Describe what you can see — where the water is coming from, how long it has been there, and whether it smells — the more specific you are, the faster the right company is on the line. If the source is a pipe or an appliance, shut the main water valve first. Have four things ready and the call goes quickly: the address, when the water started, what is wet now, and whether you have filed an insurance claim.
Still not sure which of these is your situation? (888) 840-6512 · toll-free · answered 24/7
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