Finding the best bath mat with no mildew buildup starts with choosing a design that drains or dries well—and giving it room to dry between uses. For inside the tub, look for drainage holes, a secure fit on a compatible surface, and an easy cleaning routine. For the floor outside the shower, a quick-drying stone mat may be a better fit. These five options offer different approaches, but none can prevent mildew without regular care and proper drying.
Table of Contents
Quick Comparison
| Product | Type | Standout features | Best for |
|---|---|---|---|
| OTHWAY Non-Slip Bath Tub Shower Mat | Inside-tub mat | 360 drain holes; machine washable | Large coverage and simple washing |
| homerella Mildew-Resistant Bathtub Mat | Inside-tub mat | Drainage holes; two drying hooks | Easy hanging and routine care |
| TOSORO Diatomaceous Earth Stone Bath Mat | Outside-shower mat | Absorbent stone; rubber mat included | Quick drying outside the tub |
| GORILLA GRIP Bath Tub Shower Mat | Inside-tub mat | Suction cups; drainage holes; machine washable | Broad coverage on smooth surfaces |
| homerella Kids 40×16 Bathtub Mat | Inside-tub mat | Long size; suction cups; two drying hooks | Baths with kids and toddlers |
Our Picks: Best Bath Mat No Mildew reviews
1. OTHWAY Bath Tub Shower Mat: Best for Drainage and Easy Washing
The OTHWAY is a flexible TPE mat made for use inside a bathtub or shower. Its 35-by-16-inch size is designed to cover a broad area, while 198 suction cups help hold it against the floor. The raised nodules add texture underfoot, and the mat’s 360 drainage holes allow water to pass through rather than pool on its surface.
For mildew-conscious care, the main advantage is the combination of drainage and machine washing. The manufacturer also says the mat air-dries in about 30 minutes, though drying time can vary with bathroom airflow and humidity. You’ll still want to lift or remove it after use if water can collect beneath it.
This is a practical choice if you want a washable mat with generous coverage and don’t need extra drying hooks. Its key limitation is surface compatibility: it is intended only for smooth, non-textured surfaces. Check your tub or shower floor before buying, and make sure the suction cups are firmly attached before stepping on it.
Pros:
- 360 drainage holes help water flow through the mat
- Machine washable for routine cleaning
- 35-by-16-inch size offers broad coverage
- Flexible TPE with raised nodules underfoot
Cons:
- Not intended for textured surfaces
- Does not include hooks for hanging to dry
Verdict: Choose the OTHWAY if you have a smooth tub or shower floor and want a large, machine-washable mat with plenty of drainage openings.
2. homerella Mildew-Resistant Bathtub Mat: Best with Drying Hooks
This 35-by-16-inch bathtub mat combines suction cups with a textured top and large drainage holes. Its vinyl material is described as BPA-free, latex-free, and mildew resistant. Two included adhesive hooks offer a handy way to hang the mat after bathing, which can help it dry instead of staying flat in a wet tub.
The hooks set this option apart from the OTHWAY and GORILLA GRIP mats, which are described as air-drying over the tub edge. Hanging can make drying more convenient, but it does not replace washing or checking the underside for trapped water. The mat is machine washable on a cold cycle, according to the product information.
Surface fit matters here. The mat is intended for clean, smooth surfaces and is not recommended for textured, tiled, or non-smooth floors. The instructions also warn against using bath oils and recommend pressing the suction cups firmly into place before each use. Those conditions are important for both grip and everyday safety.
Pros:
- Includes two adhesive hooks for drying and storage
- Large drainage holes let water circulate
- Machine washable on a cold cycle
- Material is described as BPA-free and latex-free
Cons:
- Not suitable for textured or tiled surfaces
- Requires a clean, smooth surface and careful suction-cup setup
Verdict: Pick this homerella mat if you want a mildew-resistant design with included hooks and have a smooth tub floor that suits suction cups.
3. TOSORO Diatomaceous Earth Mat: Best for Drying Outside the Shower
Unlike the other picks, the TOSORO is a stone-style bath mat designed for the floor outside the shower or tub—not as a liner inside the bathing area. Its diatomaceous earth construction is made to absorb water and dry quickly. A textured surface and included rubber mat provide its non-slip design.
This style keeps you from leaving a fabric or flexible mat wet on the bathroom floor, but it has a different care routine. The product information recommends scrubbing it monthly with soap and a brush or using the included sanding tools to maintain absorbency. That’s more hands-on upkeep than simply placing a flexible mat in the washing machine.
Consider this option if your main goal is a drier landing spot after a shower. It is not a replacement for a suction-cup mat inside a slippery tub, and its rigid stone surface will feel different from a soft, flexible liner. The product is also described for other uses, such as beneath plants or pet bowls.
Pros:
- Absorbent stone design is made to dry quickly
- Textured top and included rubber mat provide a non-slip design
- Does not use suction cups or sit inside the tub
- Can also be used in other areas of the home
Cons:
- Not designed for use inside a bathtub or shower floor
- Needs periodic scrubbing or sanding to maintain absorbency
Verdict: Choose the TOSORO if you need a quick-drying mat outside the shower and are comfortable with its periodic maintenance routine.
4. GORILLA GRIP Bath Tub Mat: Best for a Familiar, Washable Design
The GORILLA GRIP is a flexible, 35-by-16-inch mat for use inside the tub or shower. Hundreds of suction cups help secure it to the floor, and drainage holes let water flow beneath the mat toward the drain. Its hexagon-patterned, pebble-textured top is designed to add surface texture underfoot, and the mat is made from BPA-free materials.
Its care routine is straightforward: machine wash it and air-dry it, such as by hanging it over the side of the tub. Drainage openings and regular drying can help limit water sitting under the mat, but you should still lift it periodically to clean and dry the tub floor beneath it.
This mat is intended for clean, smooth, non-textured, non-tiled surfaces. The product information also advises against use on newly refinished tubs or shower pans. Compared with the OTHWAY, it has fewer specifically stated drainage holes, but it offers a textured top and a familiar washable design. Neither mat is suitable for an incompatible surface.
Pros:
- Hundreds of suction cups help hold the mat in place
- Drainage holes direct water toward the drain
- Machine washable and designed to air-dry over the tub edge
- Large 35-by-16-inch coverage and textured top
Cons:
- Not for textured or tiled surfaces
- Not recommended for newly refinished tubs or shower pans
Verdict: The GORILLA GRIP is a solid fit if you want a large, machine-washable in-tub mat and your bathing surface is smooth and compatible.
5. homerella Kids 40×16 Mat: Best for a Longer Kids’ Bath Mat
This longer homerella mat measures 40 by 16 inches and is designed for children’s baths. It has more than 200 suction cups, a textured top, drainage holes, and two adhesive hooks for hanging after use. The product information describes the material as BPA-free, latex-free, and non-toxic, and says the mat is machine washable on a cold, delicate cycle.
The hooks make it easier to get the mat off the tub floor between baths, while the drainage holes give water a path through the surface. Both details can support a drying routine, but the mat still needs regular washing and the tub beneath it should be checked. Its longer footprint may suit a larger bathing area, but measure your tub before choosing it.
As with the other suction-cup options, surface compatibility is essential. This mat is intended for smooth surfaces such as acrylic, fiberglass, and enamel, and is not designed for textured, tile, or pebbled tubs. Its longer size and child-focused design distinguish it from the standard-size homerella option, though it shares that mat’s smooth-surface requirement.
Pros:
- Long 40-by-16-inch size offers expanded coverage
- Includes two hooks for hanging between uses
- Drainage holes and machine-washable construction support routine care
- Product information describes the material as BPA-free and latex-free
Cons:
- Not suitable for textured, tile, or pebbled tubs
- Longer size may not fit every bathtub
Verdict: Consider this mat for a child’s bath if you need a longer liner, have a smooth tub surface, and will hang and wash it regularly.
How to Choose a Bath Mat That Resists Mildew
Decide where the mat will go
An inside-tub mat and an outside-shower mat serve different purposes. Suction-cup liners are made to sit on the floor of a bathtub or shower, while a stone mat like the TOSORO is designed for the bathroom floor outside the bathing area. Choose the type that matches where you need coverage; an outside mat is not a substitute for an in-tub liner.
Check surface compatibility before buying
Suction cups need a suitable surface to grip. The mats in this guide are intended for smooth surfaces, and some specifically exclude textured, tiled, or pebbled floors. Read the product’s surface instructions and inspect your tub before ordering. A mat that does not attach properly may not provide the intended stability.
Look for a way for water to escape
Drainage holes help water move through an in-tub mat instead of sitting on top. They do not guarantee that the area beneath the mat will stay dry, so lift the mat from time to time and clean underneath. A quick-drying outside mat works differently by absorbing water at the surface rather than draining it through a liner.
Plan how you will dry the mat
Hanging a mat after use gives it a chance to dry on both sides. The homerella options include adhesive hooks, while the OTHWAY and GORILLA GRIP mats can be air-dried over the tub edge. Choose the approach that fits your bathroom and is easy enough to do after each bath or shower.
Match the cleaning routine to your habits
Machine-washable mats are convenient if you want a simple way to clean them regularly. Check the care instructions for the right wash setting, and let the mat dry fully before putting it back. The TOSORO stone mat has a different routine: its product information calls for periodic scrubbing or sanding to maintain absorbency.
Measure for coverage and fit
Compare a mat’s length and width with the usable floor area in your tub or shower. A longer mat may provide more coverage, but it still needs to lie flat and avoid interfering with the drain. The products here range from standard 35-by-16-inch liners to a longer 40-by-16-inch kids’ mat, so measuring first can help prevent a poor fit.
Keep expectations realistic about mildew
“Mildew resistant” does not mean mildew-proof. Moisture, residue, and limited airflow can still create a need for cleaning. For any mat, follow the care instructions, rinse away residue, lift it to dry when practical, and clean the floor beneath it. Those habits matter alongside the mat’s material and drainage design.
Frequently Asked Questions
Can any bath mat guarantee no mildew?
No. A mat’s drainage, materials, and drying features can help with moisture management, but no product in this guide guarantees that mildew will never form. Regular cleaning and letting the mat dry are still important.
Are suction-cup mats safe on every tub surface?
No. Suction-cup mats need a compatible surface, and the products here specify smooth surfaces. Several are not intended for textured or tiled floors. Check the product instructions, press the cups firmly into place, and test the mat before use.
Do drainage holes stop mildew from forming underneath?
Drainage holes let water pass through the mat, but they cannot ensure that the surface underneath stays dry. Lift the mat regularly to clean and dry both the mat and the tub floor.
Which mat is best for drying outside the shower?
The TOSORO diatomaceous earth mat is designed for use outside the tub or shower. It absorbs water and is described as quick drying, but it requires periodic scrubbing or sanding to maintain absorbency.
How often should I wash a bath mat?
Follow the care instructions for your specific mat. For machine-washable options, wash it as needed and allow it to dry fully. Regularly check the mat and the surface beneath it for moisture or residue.
Can I use bath oils with a suction-cup mat?
The homerella 35-by-16-inch mat’s instructions warn against bath oils. Oils may also make bathing surfaces slippery, so follow the product guidance and use care when stepping in or out of the tub.
What is the best pick for a family bathtub?
The OTHWAY and GORILLA GRIP mats both offer 35-by-16-inch coverage and are machine washable. The OTHWAY emphasizes its 360 drainage holes, while the GORILLA GRIP has a textured top and suction-cup design. Choose based on your surface, preferred features, and care routine.
Final Recommendation
For a smooth tub or shower floor, the OTHWAY is the best all-around choice in this group if you value broad coverage, drainage, and machine washing. Pick the homerella 35-by-16-inch mat if included drying hooks matter more to you, or the longer homerella kids’ mat if you need its larger footprint. For the bathroom floor outside the shower, choose the TOSORO stone mat instead. Whichever you select, regular cleaning and thorough drying are essential to keeping mildew buildup at bay.
