When your house is fumigated, the structure is sealed with a tent or other barriers to contain the fumigant gas. The gas is then introduced to penetrate every part of the structure, eliminating pests wherever they are hiding. After a designated period, the house is aerated to allow the fumigant to dissipate. Professionals then test the air quality to ensure the house is safe for reentry. During this time, residents and pets must vacate the premises. Once cleared, the house is pest-free and ready for occupancy.