Moving out of a moldy home: what to keep, clean, or throw away

Did the item get wet, or did it just share the air?

This question sorts almost everything, and homeowner forums skip it. Advice online escalates from “wash the clothes” to “leave it all behind.” Federal guidance does not say that.

There are two kinds of belongings in a moldy home.

Items that got wet. A leak, a flood or long-term condensation soaked them, and mold may be growing on or inside them. EPA and CDC have clear rules for these: porous items that were wet and cannot be cleaned and dried within 24 to 48 hours are usually discarded; hard items are cleaned.

Items that only shared the building. They stayed dry. What they picked up is dust that contains mold spores, the same thing that settles on everything in any house, just more of it. EPA says mold spores are found in all indoor air and in house dust, and that mold grows only where there is moisture. These items need cleaning, not disposal.

The page you want depends on which group you are in. If your belongings were under floodwater or sewage, use what to throw away after a flood. That is contaminated water with its own rules. This page covers mold exposure without flooding: the leaky apartment, the humid closet, the house you are leaving because of a mold problem.

Put on protection first. EPA’s post-disaster guide says the minimum is an N-95 respirator, goggles and gloves, and a half-face or full-face respirator for extended work with moldy belongings. See PPE for mold cleanup. Then start sorting. The mold hub has the background on what mold needs to grow.

Keep, clean or discard: a matrix by material

Use the matrix for the item in front of you. “Wet” means the item was soaked or stayed damp and has visible growth or a strong smell. “Dry” means it was in the building but never wet.

Two rules sit behind the whole table. EPA says porous materials that are wet and have mold growing on them may have to be discarded, because mold can fill the spaces inside them and be impossible to remove completely. And EPA says mold on hard, non-porous surfaces can generally be removed by wiping or scrubbing with water, or water and detergent.

How do you clean items that were never wet?

You are removing dust, not killing growth. That changes the method.

1. Work outdoors or in a room with the window open where you can. Shake out textiles outside.
2. HEPA vacuum first. EPA’s remediation guide recommends HEPA vacuums for final cleanup after materials are dry. A HEPA vacuum captures the fine particles a regular vacuum blows back into the room. Vacuum fabric, book edges, lampshades, the undersides of furniture and the inside of drawers.
3. Then damp wipe. EPA’s method for non-porous surfaces is water or water and detergent. Wipe hard furniture, shelving, plastic bins, frames and appliance housings. Change the water often. Let everything dry.
4. Launder what can be laundered. Hot water, detergent, a full dry cycle. Run an empty hot cycle afterward if the load was heavily dusty.
5. Skip the chemicals. EPA says it does not recommend biocides such as bleach as a routine practice in mold cleanup, and CDC says never mix bleach with ammonia or other cleaners. Detergent does the work on dust.
6. Do not fog or ozone the pile. EPA says ozone generators sold as air cleaners do not remove mold at concentrations that meet health standards. A sealed room of belongings with an ozone machine running is a common forum suggestion and a bad one.

Pack cleaned items into clean boxes from outside the moldy room.

What do you do with items that got wet?

Follow the 24-to-48-hour rule from EPA and CDC, then the porous rule.

EPA says to dry water-damaged areas and items within 24 to 48 hours to prevent mold growth. CDC’s cleanup guidance says to remove porous items that have been wet for more than 48 hours and cannot be thoroughly cleaned and dried, and it lists carpeting and padding, upholstery, wallpaper, drywall, floor and ceiling tiles, insulation, some clothing, leather, paper, wood and food as examples. CDC’s summary of the rule is four words: “When in doubt, take it out.”

The reason is not that these items are dangerous to touch. It is that mold grows into porous material and cannot be removed from inside it, so the item keeps the smell and keeps shedding spores. CDC also notes that dead mold can still cause allergic reactions, so a treated item that still has mold in it is not a fixed item.

For things that are worth the effort:

• Hard items (metal, glass, plastic, sealed wood) get washed with detergent and water and dried. That covers most kitchenware, tools, frames and toys.
• Finished wood can be cleaned with mild detergent and clean water and allowed to dry, per EPA’s water damage table. Soft, swollen or delaminated wood is past saving.
• Books, papers and photographs have their own rules, in the next section.
• Anything that smells after cleaning and drying is telling you the mold is inside it.

For the household’s PPE and bagging steps, see mold cleanup PPE. Bag discarded items where they sit, so you are not carrying open moldy cushions through clean rooms.

Can books, papers and photographs be saved?

Often, and the rules come from the National Archives, which deals with exactly this problem.

• Dry first. The Archives says the first priority is to dry moldy items. Air circulation dries most things, though they may warp. Keep fans pointed near, not at, the items.
• Do not wipe active mold. Fuzzy or slimy mold smears and spreads. Wait until it is dry and powdery, then brush or vacuum it off outdoors with a soft brush and gentle strokes.
• Freeze what you cannot dry in two days. The Archives says wet books, documents or photographs that cannot be air dried within two days should be frozen to inhibit mold. Freezing does not kill mold; it stops it until you can deal with the item. Never freeze old photographs or negatives.
• Glossy paper sticks. Interleave bound glossy pages with wax paper and dry loose glossy items in a single layer.
• High-value items go to a conservator before you do anything. The Archives points to the American Institute for Conservation for referrals, and EPA says you may wish to consult a specialist for items that are expensive or sentimental.

A box of paperbacks is not worth freezer space. A family Bible or original photographs are. Decide by value, not by how bad it looks today.

Will your belongings bring mold into the new home?

This fear drives most “throw it all away” advice, and the science does not support it as a blanket rule.

EPA says mold spores are in all indoor and outdoor air, and that the way to control mold indoors is to control moisture. A clean, dry sofa carries no more risk than the air coming through the door. What can cause a problem in a new home is a wet item: a damp mattress, a box of books that never dried, a rug rolled up wet. Those carry active growth and moisture together, and they can smell up a closet in the new place.

So the rule for the move is simple. Nothing goes in the truck wet. Nothing with visible growth goes in without being cleaned or wrapped for disposal. Dusty-but-dry items get vacuumed and wiped first. Then keep the new home dry: EPA’s target is relative humidity below 60 percent, ideally 30 to 50 percent, and CDC says no higher than 50 percent.

If you or someone in the household is sensitive to mold, the dust itself can be the problem rather than any risk of new growth. CDC says people with asthma or mold allergies may have severe reactions, and that people with weakened immune systems or chronic lung disease can get lung infections from mold. For them, cleaning more thoroughly, or letting someone else handle the dusty items, is reasonable. See mold symptoms for what the health agencies do and do not attribute to mold exposure.

What should renters document before they leave?

If you are leaving a rental because of mold, the belongings you discard may be part of a dispute or a claim.

• Photograph every discarded item, with a close-up of the damage and a note of what it was and roughly what it cost.
• Keep receipts for cleaning supplies, laundry, replacement items and any professional cleaning.
• Keep the written record of when you reported the mold and what the landlord did.
• Do not throw out a damaged item the landlord or an insurer has asked to inspect until they have seen it or declined in writing.

Renters insurance may cover belongings damaged by a sudden leak, often with a mold sublimit; check the policy. Our pages on mold in an apartment and tenant rights and documenting your claim go further.