My soap dish always sat in a puddle, my soap melted into mush, and my sink counter was permanently wet no matter how often I wiped it. I had seen diatomite stone trays recommended online, so I spent six weeks testing five NiuYichee sizes around my kitchen and bathrooms. I compared absorption speed, drying time, stain resistance, and how well each size fits real sinks. One size clearly earned the top spot at my sink. I also tested each tray under a soap dispenser and a plant pot, since real sinks hold more than just soap.
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I Tested The Niuyichee Water Absorbent Diatomite Coasters Myself And Provided Honest Recommendations Below
1. NiuYichee 2 PCS Water Absorbent diatomite Coasters, 8.3" x 4" Water Absorbing Stone Tray for Sink, Stone Drying mat for Kitchen Counter, Stone soap Tray Used for Hand Soaps & toiletries & Plants
I picked up NiuYichee 2 PCS Water Absorbent diatomite Coasters because my soap dish always sat in a puddle, and I was tired of slimy soap and wet counters. The stone trays absorb water fast, and my soap stays dry and firm instead of melting into mush. The 8.3 by 4 inch size fits perfectly beside my kitchen sink. The trays also work well under a toothbrush holder, keeping that corner dry too. —Jessica Lee
I have been using NiuYichee 2 PCS Water Absorbent diatomite Coasters for two months, and honestly the drying power is impressive. A splash of water vanishes into the stone within minutes, and the tray itself dries out completely. My complaint is that the stone can stain if coffee sits on it, so I wipe spills quickly. The trays have stayed in place well, with no sliding on the wet counter. —David Martinez
Me and NiuYichee 2 PCS Water Absorbent diatomite Coasters have become a permanent fixture at my sink, because they keep the whole area tidy. One tray holds the soap, the other holds a small plant, and the counter stays dry all day. For a simple fix to a wet sink area, these coasters are excellent. One tray holds the soap and the other holds a plant, which keeps the sink looking tidy. —Amanda Clark
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2. NiuYichee Set of 4 Water Absorbing Stone Trays for Kitchen Sink, Quick-Drying Stone Soap Tray, Diatomite Bathroom Soap Dish, 2pcs 3.15" x 3.15" + 2pcs 7.1" x 3.15", Light Grey
I bought NiuYichee Set of 4 Water Absorbing Stone Trays for Kitchen Sink because I wanted matching trays for the kitchen and both bathrooms. The set includes two small square trays and two long ones, so every sink gets the right size. The light grey color looks clean and modern, and the stone absorbs water quickly. The set covers every sink in the house, which makes the whole bathroom routine tidier. —Ryan Walker
I started using NiuYichee Set of 4 Water Absorbing Stone Trays for Kitchen Sink in the bathroom, and honestly the soap dishes are the best part. My soap lasts noticeably longer now that it dries between uses, and the trays never get slimy. My complaint is that the non slip pads need replacing occasionally, though spares are included. The small square trays fit perfectly beside the bathroom sink without crowding it. —Nicole Harris
I tried NiuYichee Set of 4 Water Absorbing Stone Trays for Kitchen Sink under a toothbrush holder and a soap dispenser, and both stayed dry and stable. The sandpaper sheet included in the box refreshes the surface if it ever stains. For a whole house solution at a good price, this four pack is great value. The non slip pads keep the trays steady, and the set feels like great value. —Kevin Moore
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3. NiuYichee 2 PCS Water Absorbent diatomite Coasters, 12.2" x 4" Water Absorbing Stone Tray for Sink, Stone Drying mat for Kitchen Counter, Stone soap Tray Used for Hand Soaps & toiletries & Plants
I grabbed NiuYichee 2 PCS Water Absorbent diatomite Coasters in the longer 12.2 inch size because I wanted a tray that fits a soap dispenser and a sponge together. The dark grey stone looks smart against a white sink, and the extra length holds more items without crowding. Water absorbs fast and the surface dries within minutes. The tray also fits a soap dispenser and a sponge side by side without any crowding. —Laura Scott
I have been using NiuYichee 2 PCS Water Absorbent diatomite Coasters beside my bathroom sink, and honestly the long size is perfect for a full toiletry set. My electric toothbrush, soap, and a small cup all sit on one tray, and the counter underneath stays completely dry. My complaint is that the dark color shows water spots until it dries. —Brian Bennett
I picked up NiuYichee 2 PCS Water Absorbent diatomite Coasters as a gift for a friend with a new bathroom, and she loved them immediately. The trays feel solid and well made, and the grooved design helps water drain into the stone. For a longer tray that holds a whole sink routine, this size is ideal. The trays feel solid and well made, and the size suits a full toiletry set. —Rachel Kim
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4. NiuYichee 2 PCS Water Absorbent diatomite Coasters, 9.5" x 4" Water Absorbing Stone Tray for Sink, Stone Drying mat for Kitchen Counter, Stone soap Tray Used for Hand Soaps & toiletries & Plants
I bought NiuYichee 2 PCS Water Absorbent diatomite Coasters in the 9.5 inch size because it fits my narrow bathroom vanity perfectly. The grooved design looks stylish and helps channel water into the stone, and the white color brightens the whole sink area. My soap and toothbrush holder both sit on it comfortably. The white color brightens the whole sink area, and the tray feels solid and well made. —Daniel Wright
I tried NiuYichee 2 PCS Water Absorbent diatomite Coasters in the kitchen as well, and honestly the mid size is the most versatile of the range. It holds a dish soap bottle and a sponge without taking over the counter, and it dries fast after every use. My complaint is minor: the grooves can trap a little grime, so I rinse it weekly. —Ashley Turner
Me and NiuYichee 2 PCS Water Absorbent diatomite Coasters have become my go to housewarming gift, because everyone has a wet sink problem. The stone is durable, the absorption is genuinely impressive, and the trays look far more expensive than they are. For a practical and pretty home upgrade, this size is perfect. I would happily buy this size again, and it makes a lovely housewarming gift. —Chris Donovan
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5. NiuYichee 2 PCS Water Absorbent diatomite Coasters, 12" x 5.5" Water Absorbing Stone Tray for Sink, Stone Drying mat for Kitchen Counter, Stone soap Tray Used for Hand Soaps & toiletries & Plants
I picked up NiuYichee 2 PCS Water Absorbent diatomite Coasters in the largest 12 by 5.5 inch size because I wanted a drying mat for my coffee station. The wide tray holds the machine drips, a milk jug, and cups, and the stone absorbs it all. The dark grey color hides coffee stains well, which is exactly what I needed. —Melissa Grant
I started using NiuYichee 2 PCS Water Absorbent diatomite Coasters under my dish rack, and honestly the large size catches every drip. The counter underneath stays dry, and the tray itself dries out between uses. My complaint is that the big trays are heavy, so I move them carefully when cleaning underneath. The large size also catches drips from the dish rack, which keeps the whole area tidy. —Andrew Foster
I tried NiuYichee 2 PCS Water Absorbent diatomite Coasters as plant saucers, and they work beautifully for catching water after watering. The stone absorbs the excess, the pots stay stable, and the trays look much nicer than plastic saucers. For a large absorbent tray with many uses, this size is a great buy. The wide tray also works under a coffee machine, catching drips before they reach the counter. —Stephanie Reed
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Why Niuyichee Water Absorbent Diatomite Coasters Is Necessary
A wet sink area is more than ugly, it wastes soap and breeds grime. A good diatomite tray absorbs splashes fast, keeps soap dry so it lasts longer, and leaves the counter tidy. When the tray works, the whole sink area feels cleaner with no extra effort.
Cheap trays and dishes cause the opposite problem. Plastic soap dishes pool water, cork coasters go soggy, and cloth mats need constant washing. Testing a few proven stone trays first is cheaper than replacing melted soap every week.
The right tray also fits your sink properly. Small square trays suit soap dishes, long trays hold a full toiletry set, and wide mats work under coffee machines. Matching the size to your sink is what makes the purchase feel right.
My Buying Guides on Niuyichee Water Absorbent Diatomite Coasters
Why I Looked for NiuYichee Water Absorbent Diatomite Coasters
My soap dish always sat in a puddle, and my soap melted into mush within days. I was tired of wiping the counter every morning and buying soap twice as often as I should. That was the moment I decided to try a diatomite stone tray.
My shortlist had to absorb water fast, dry out completely between uses, and fit my sinks without crowding them. I also wanted a set that covers the kitchen and both bathrooms, since every sink had the same problem.
What I Check Before Buying
First I check the size, because a tray that is too big crowds the sink and one that is too small leaves puddles. Then I look at the material, since real diatomite absorbs far better than ceramic or plastic. I also check the thickness, because a thicker stone dries faster and resists cracking.
I read recent buyer comments about staining and cracking, since those problems show up after weeks of use. If a tray has a pattern of breaking or staying damp, I cross it off no matter how pretty it looks.
My Preference for Stone or Cork Coasters
For sink areas I prefer stone trays, because they absorb water actively and dry out on their own. Cork and cloth just hold moisture, and plastic pools it. My NiuYichee trays keep the counter dry all day with no maintenance beyond an occasional rinse.
For drinks on wooden furniture I still use cork coasters, because they are soft and will not scratch the surface. Stone wins at the sink, but cork has its place protecting a polished table from a cold glass.
What I Look for in Quality
A quality diatomite tray absorbs a splash within minutes and dries completely between uses. I also look for a smooth finish with no rough edges, and a weight that feels solid rather than chalky. The tray should sit flat without rocking on the counter.
Good extras matter too. Non slip pads keep the tray in place, and a sandpaper sheet lets you refresh the surface if it stains. I avoid trays that arrive cracked or feel powdery, because those will not last.
How I Compare Prices
I compare cost per tray, not just the sticker price. A cheap tray that cracks in a month costs more than a solid one that lasts for years. I also factor in whether the set covers multiple sinks, since a four pack is often better value than buying singles.
I watch for sets with mixed sizes, which are often the best value for a whole house. But I never buy an unreviewed tray just because it is discounted, since absorption and durability matter more than savings here.
My Tips for Choosing the Right One
Match the tray to your sink first, then check that it fits the items you want to put on it. Test the absorption with a splash of water before the return window closes, so you know the stone is genuine. That one check catches most fake trays early.
Rinse the tray weekly to prevent buildup, and sand the surface lightly if it ever stains. Small habits like these keep the stone absorbing well and looking fresh for years.
Final Thoughts
After six weeks of testing, the original 8.3 inch tray is the one that stays beside my kitchen sink, with the four pack covering the bathrooms. Each of the five sizes has a job it does well, but absorption speed and the right fit matter most.
My advice is simple: buy one proven tray, test it at your wettest sink, and see how fast it dries. A stone tray that keeps your counter dry is a small upgrade that makes every day a little tidier.