Earthworm® Mold Stain & Mildew Stain Treatment
$24.99
- Fragrance and dye free
- Natural bioenzymatic process leaves no harsh chemical residues
- For use on a variety of surfaces, such as tubs, toilets, bathroom tile and grout, fiberglass showers, shower doors and curtains and kitchen counters
Earthworm® Mold & Mildew Treatment uses a naturally-occurring process to break down organic materials. It removes mold stains, fungus stains and mildew stains from virtually any porous or non-porous surface, both inside or outdoors.
Available in 22 oz single bottles, cases of 6, or 64 oz bottles.
The Bleach Problem
Bleach makes mold stains disappear. That's real. Spray bleach on black tile grout, scrub for a minute, and it looks clean. The problem is what bleach doesn't do.
Bleach is a strong oxidizer. It whitens the stain by breaking apart the pigment molecules in the mold. But the organic matter the mold was feeding on — the dead skin cells, soap residue, and mineral deposits embedded in the grout — stays put. The mold itself is damaged, but the food source is still there. Give it a few weeks of warm, humid showers and it's back.
Earthworm® Mold & Mildew Stain Treatment goes after the organic substrate. The enzyme formula breaks down the biological material that mold colonizes. When that substrate is gone, the surface stays cleaner longer. You're not just whitening the stain — you're removing what caused it.
Where It Works
Bathroom surfaces are the primary use case:
- Tile and grout in shower walls and floors
- Fiberglass shower enclosures and shower doors
- Bathtub surrounds and caulk lines
- Bathroom sink and countertop areas near the faucet
But it's not limited to the bathroom. Kitchen surfaces with recurring mildew, outdoor patio furniture, vinyl siding, and other exterior surfaces with organic buildup all respond to enzyme treatment. The formula works on both porous surfaces (grout, caulk) and non-porous surfaces (glass, fiberglass, ceramic).
How to Use
Apply directly to the stained surface and let it sit for 5 to 10 minutes. For heavier staining or textured surfaces like grout lines, give it 15 minutes.
Scrub with a brush or sponge. The enzymes do the substrate work, but mechanical scrubbing helps with surface stains on porous materials.
Rinse with water and dry the surface.
For persistent grout staining, a second application after the first dries will often lift what the first didn't. Old, deeply set stains take more contact time than fresh ones.
No Fumes. No Residue.
This is a real advantage in bathrooms. Bleach-based mold cleaners require open windows and ventilation — in a small bathroom in winter, that's a genuine inconvenience. Some people get headaches from the fumes even with the window cracked.
Earthworm® has no caustic chemistry. No bleach fumes. No residue that you're scrubbing off afterward. You can use it in a small, enclosed bathroom without turning the exhaust fan on high or propping the door open.
Once the surface is rinsed and dry, it's clean without any chemical film left behind.
Note: This product addresses mold and mildew stains on surfaces. For active mold infestations that have spread beyond surface staining into walls, ceilings, or structural materials, consult a licensed mold remediation professional.
