When should applications indoors be made?

• A. After the occupied space is evacuated
• B. While the space is fully occupied
• C. During regular business hours only
• D. Only after a notice is posted on the door

Answer: (A)

Indoor safety requires that the space be empty before you apply a product, so occupants aren’t exposed to fumes, vapors, or residues. Evacuating the occupied area ensures no one is inside during the application and for any immediate after-use ventilation period, reducing health risks to people and allowing the space to be treated properly. Limiting work to times when the space is occupied or relying only on posted notices does not guarantee that the area is vacant, and applying while people are inside can lead to exposure. Therefore, the best practice is to perform indoor applications after the occupied space is evacuated.