The safe re-entry time after pest control is the later of the product label's waiting period and the time needed for treated surfaces to dry.
Many total-release foggers require people and pets to stay out for 2 to 4 hours, followed by ventilation. The EPA's 2017 Citizens' Guide to Pest Control and Pesticide Safety also advises following the product label and keeping people away until the stated re-entry period has passed or treated areas are dry, whichever takes longer.
| Pest-control treatment | When you can go inside |
|---|---|
| Crack-and-crevice or surface spray | After treated surfaces are dry and the label or technician's re-entry time has passed |
| Indoor space spray or aerosol | After the label's waiting period, followed by ventilation as directed |
| Bug bomb or total-release fogger | After the exact time on the label, often 2 to 4 hours, followed by thorough ventilation |
| Fumigation or tenting | Only after the licensed fumigation company has tested and cleared the property |
| Outdoor perimeter treatment | Stay off sprayed surfaces until they are dry or the label's re-entry period has passed, whichever is longer |
The label controls if it conflicts with a general estimate or the technician's informal advice.
If Your Home Was Treated With a Regular Indoor Spray
After a regular indoor spray, re-enter only when all of these conditions are met:
- The waiting period on the label and the technician's instructions has passed.
- All treated surfaces are dry.
- There is no visible wet spray, pooled liquid or airborne mist.
- The rooms have been ventilated if the product label or technician permits or requires it.
Do not touch wet pesticide residue. Keep children and pets away from treated areas until the surfaces are dry and the label allows re-entry.
If a Bug Bomb or Fogger Was Used
Stay outside for the exact time printed on the fogger label. EPA guidance says total-release foggers commonly require people and pets to remain outside for 2 to 4 hours, but the specific product label controls. After that period, open doors and windows and ventilate the home as directed before staying inside.
Do not re-enter early to check the treatment. Concentrated pesticide mist can cause illness.
If the House Was Fumigated or Tented
Fumigation has no general wait time that applies to every property. Do not enter based only on the number of hours that have passed.
For structural fumigation, including treatment with sulfuryl fluoride, entry is allowed only after the licensed fumigation company has tested the property and cleared it for occupancy. Additional ventilation may be required after clearance.
Ask the fumigation company for:
- Written confirmation that the property is cleared
- The name of the fumigant used
- Any required ventilation instructions
- The results of the final air testing
Can I Stay Inside During an Exterior Pest Treatment?
Usually, yes. Stay away from wet treated areas, including patios, grass, steps and other sprayed surfaces, until they are dry or the label's re-entry period has ended. Keep children and pets away from those areas as well.
If the technician sprays near open windows, doors or air intakes, ask whether they should be closed and when they can be reopened.
What Should I Do Before Bringing Children or Pets Back?
Ventilate the home as directed by the label or technician, then check that:
- Food, dishes, pet bowls, toys and bedding are away from treated surfaces.
- Treated shelves and cabinets are dry before you put items back.
- Pets cannot lick treated floors, baseboards, plants or other surfaces.
- Shoes are removed before walking through the home if pesticide was applied around entrances.
Pesticide residue can remain after a surface has dried, so children and pets should not lick or handle treated areas.
What If I Do Not Know What Product Was Used?
Do not rely on the smell or use a generic "wait a few hours" rule. Call the pest-control company before entering and ask for:
- The product name and EPA registration number
- The required re-entry interval
- Whether the treatment requires ventilation
- Whether any surfaces need cleaning before use
- Separate instructions for children, pets, fish tanks and people with asthma or chemical sensitivity
Pesticide products must be used according to their labels, and the applicator should be able to provide the product and safety information.
If anyone develops breathing difficulty, severe coughing, vomiting, confusion or another concerning symptom after exposure, leave the area and contact Poison Control in the United States at 1-800-222-1222. Seek emergency medical help when needed.