For most standard mattresses, you can leave them inside your home during fumigation, but you need to remove any waterproof or plastic covers first. The fumigant gas needs to penetrate freely through porous materials and then escape during aeration. Sealed or trapped pockets of gas inside or around a mattress are the real danger, and a few specific mattress types require extra steps or removal entirely.
Why Mattress Prep Matters
Structural fumigation typically uses a gas called sulfuryl fluoride, which spreads throughout your home and seeps into cracks, pores, fabric, and wood to reach pests everywhere. After the treatment period, the pest control company aerates the structure and measures gas levels to confirm they’ve dropped to 1 part per million or less before letting you back in.
The problem is that anything preventing the gas from escaping during aeration can create a hidden pocket of fumigant. When you return home and interact with that item, the trapped gas slowly leaks out and exposes you. Mattresses are one of the most common culprits because they’re large, porous, and often wrapped in covers that seal gas inside.
Remove Waterproof and Plastic Covers
The National Pesticide Information Center lists this as a standard preparation step: remove waterproof covers on mattresses and pillows before fumigation. This includes vinyl mattress protectors, zippered waterproof encasements (the kind often used for allergen or bed bug protection), and any plastic sheeting. The goal is to let the gas move through the mattress freely and then ventilate out completely during aeration.
If your mattress has a removable waterproof cover, simply unzip it and take it off. You can store it in your car or anywhere outside the fumigation zone. Put it back on after you return.
Mattresses That Must Be Removed Entirely
Certain mattress types trap gas in ways that standard aeration cannot fix. These need to come out of the house before fumigation begins:
- Baby crib mattresses. These almost always have a permanent waterproof covering that cannot be removed. Pest control guidelines specifically require crib mattresses to be taken out of the structure.
- Mattresses with permanent plastic covers. Any mattress or pillow with a built-in, non-removable waterproof layer falls into this category. If you can’t strip the plastic off, the mattress leaves the house.
- Air mattresses and mattresses with air bladders. This one catches people off guard. Some higher-end mattresses, particularly adjustable sleep-number style beds, contain air chambers inside the mattress. These air cells fill with fumigant during treatment and then slowly release it long after the house has been cleared. In one documented case, a mattress with an air bladder was still off-gassing the fumigant at more than twice the safe clearance level even after the rest of the home tested clean. The gas was trapped inside the air cells with no way to ventilate. Deflate air mattresses and air-bladder beds completely before fumigation, or remove them from the home.
Standard Innerspring and Foam Mattresses
A regular innerspring, latex, or foam mattress without any waterproof covering can stay in the home. The gas will penetrate the fabric and padding during treatment and then dissipate during the aeration period. Just make sure drawers in the bed frame, storage compartments under the mattress, and any closed spaces nearby are left open. Locked drawers and sealed cabinets have been identified as sources of rising gas levels after fumigation because the fumigant seeps in but cannot escape if they stay shut.
For memory foam mattresses specifically, the dense foam structure means gas may take slightly longer to fully ventilate compared to an open-coil innerspring. There’s no official requirement to remove memory foam mattresses, but leaving them uncovered (no sheets, no protector) and ensuring good airflow around the bed during aeration is a smart precaution.
What to Do With Bedding and Linens
Sheets, blankets, comforters, and pillowcases are porous materials that absorb the fumigant. You have two options: remove them from the home before treatment, or wash them thoroughly after you return. Most pest control companies recommend pulling all bedding off the mattress and either bagging it up to take with you or leaving it loosely spread out so it aerates along with everything else.
If you leave bedding inside, wash everything in your normal washing machine before using it again. Avoid using high-heat drying until items have been washed first, since heat can cause chemical residues to become airborne. For items like decorative pillows with permanent plastic inserts or foam-filled cushions, the same waterproof-cover rules apply: if gas can get trapped inside a sealed layer, either remove the cover or take the item out.
After You Return Home
Your pest control company will test the air inside your home and certify it as safe before you’re allowed back in. Once cleared, open all windows and run fans to continue ventilating. Check any items that could have trapped gas: flip couch cushions, open all drawers and cabinets that might have been overlooked, and inspect closets.
For mattresses that stayed in the home, let them air out with the covers off for several hours before remaking the bed. If you have an adjustable bed with air chambers that you deflated rather than removed, inflate and deflate the chambers a few times near an open window to flush out any residual gas. Pay attention to any unusual chemical smell coming from the mattress. A properly aerated home and mattress should have no detectable odor from the fumigant.
You don’t need to professionally clean or replace a standard mattress after fumigation. Sulfuryl fluoride is a gas, not a liquid, so it doesn’t leave visible residue or staining on fabric. The concern is purely about trapped gas pockets, not surface contamination. Once the gas has fully ventilated, the mattress is safe to sleep on.