What to expect before, during and after fumigation

You've spotted something that shouldn't be there—a termite trail in the wall, bed bugs in the bedroom, or cockroaches darting across the kitchen at night. You know fumigation might be the answer, but you're also wondering what actually happens when someone comes to treat your home. Will you need to leave? For how long? What do you do with your furniture? The uncertainty can feel as uncomfortable as the infestation itself.

Fumigation is a serious intervention. Understanding the before, during and after helps you prepare properly, protect your belongings, and know what to do when the job is done. It also tells you whether you actually need full fumigation or whether a simpler treatment will work.

What happens in the days before treatment

Once you've booked a fumigator, they'll give you specific instructions. These aren't bureaucratic—they're practical steps that make the treatment work and keep you safe.

You'll typically need to remove or seal food, medicines, and toiletries. Pet food and water bowls should go too. Some fumigators ask you to move plants and certain fabrics, though this varies by chemical and pest type. You'll be told to cover fish tanks, turn off air conditioning, and close internal doors so the fumigant reaches all spaces equally.

The fumigator should explain how long you and your family (including pets) must leave the property. This is not negotiable—you cannot shelter in another room while fumigation happens. Many people think they can stay nearby; they can't. You need to arrange somewhere else to be for the duration, which could be several hours or sometimes overnight depending on the treatment and infestation severity.

Before the team arrives, clear clutter from floors and under furniture so they can access infested areas. Ask your fumigator exactly what they need access to and whether they'll move anything themselves or expect you to have done it.

During and immediately after: what you need to know

When the fumigators arrive, they'll assess the property, set up their equipment, and seal or treat areas as needed. The actual fumigation process is swift in the home itself—usually 30 minutes to a few hours depending on the size and type of infestation. However, the chemical needs time to settle and work, which is why you're kept out.

After the fumigation is complete, the fumigator will ventilate the property. This is a critical step; they'll open windows and doors to allow the fumigant to clear. The timeline for re-entry depends on the chemical used and the fumigator's instructions—this might be a few hours, a full night, or longer. Some fumigants require you to wait until the smell has largely dispersed; others have a specific safe re-entry time.

When you do return:

• Open all windows and doors for at least 30 minutes
• Wipe down surfaces where food is prepared
• Don't disturb treated areas (walls, under floorboards, roof spaces) for the period your fumigator specifies
• Keep children and pets away from sprayed surfaces until they're fully dry
• Avoid sweeping or vacuuming dead insects immediately; leave them for a day or two so the fumigator (if they're returning) can verify the treatment worked

Some fumigation treatments require follow-up visits. Termite fumigation, for example, often needs a second application weeks later. Your fumigator will outline this schedule upfront.

After fumigation: monitoring and re-infestation

The first week after treatment is when you'll notice the most activity—dead pests appearing, fewer live sightings. This is normal and means the fumigation is working. If you see no change after two weeks, contact your fumigator to discuss whether the treatment needs adjusting or whether the infestation is more extensive than initially thought.

Keep records of your fumigation date, the chemical used, and the areas treated. This helps if infestation returns and you need to prove you've already had professional treatment.

Fumigation is invasive but effective when done properly. Finding a fumigator who explains every step beforehand—what to move, when to leave, when you can return—removes most of the anxiety. On Strove, verified fumigation services include detailed pre-treatment consultations, so you know exactly what to expect before anyone arrives at your door.