The short answer
Start with Safety and Prep
Before you touch anything, put on gloves, goggles, and a mask that covers your nose and mouth. Mold spores can irritate your lungs and skin, so work outside or in a well-ventilated area. If you feel unwell during the task, stop and see a doctor.
Take the plastic item outside and brush off loose mold with a stiff brush or an old toothbrush. Do this gently to avoid sending spores into the air. This step removes the bulk of the growth and makes the cleaning step easier.
Wash with Soap and Water First
Mix warm water with a few drops of dish soap in a bucket. Use a sponge or cloth to wipe the entire plastic surface, paying extra attention to crevices and textured areas where mold hides. Rinse with clean water afterward.
Soap and water works on many non-porous plastics, but it may not kill mold spores. For a deeper clean, move to a disinfecting step. Always test a small hidden area first to make sure the plastic won't stain or warp.
- Use a soft brush for textured plastic
- Rinse with clean water after washing
- Dry with a towel or let air dry
- Repeat if you still see mold spots
Disinfect with Bleach or Vinegar
For non-porous plastic, a bleach solution works well. Mix 1 part bleach with 4 parts water in a spray bottle or bucket. Apply it to the plastic, let it sit for several minutes, then scrub and rinse thoroughly. Never mix bleach with vinegar or ammonia.
White vinegar is a milder option. Spray undiluted vinegar on the mold, let it sit for an hour, then scrub and rinse. Vinegar is safer for some plastics and has less harsh fumes, but it may not work on heavy mold growth.
Dry Completely to Prevent Regrowth
Mold needs moisture to grow, so drying is just as important as cleaning. Wipe the item with a dry towel, then leave it in a sunny, dry spot for several hours. Sunlight also helps kill lingering spores.
If the plastic item is something you use for food, wash it again with hot soapy water after disinfecting. For toys or containers, make sure every drop of moisture is gone before storing them. A dehumidifier can help in damp basements or closets.
Know When to Throw It Away
Porous plastics, like those with a rough texture or foam backing, can trap mold deep inside. If the item smells musty after cleaning or still shows dark stains, it may be a good choice to discard it. Replacing a small item is safer than risking your health.
For valuable or sentimental plastic items, consider professional help. Local water damage pros can clean and sanitize contents without damaging them. They have the right tools and methods for tricky items, so you don't have to guess.
- Porous plastic may hold mold inside
- Musty smell after cleaning means deep growth
- Dispose of items that can't be fully cleaned
- Ask a professional for valuables
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Call Now (208) 729-2441Frequently asked questions
Can I use bleach on all plastic items?
Bleach can damage some plastics, especially thin or colored ones. Test a small hidden area first. For food containers, rinse very well after using bleach. If the plastic looks cloudy or warps, stop and switch to vinegar or soap and water.
How do I prevent mold from coming back on plastic?
Keep plastic items dry and store them in areas with good airflow. Wipe down items that sit in damp spaces, like bathrooms or basements. Consider using a dehumidifier in humid rooms. Check stored items regularly for any new spots.
Is mold on plastic harmful to my health?
Mold can cause allergic reactions, coughing, or skin irritation in some people. If you have asthma or a weakened immune system, avoid cleaning mold yourself. See a doctor if you feel unwell after exposure. For large mold problems, ask a mold professional for help.