







Cigarette and tobacco smoke residue may persist on surfaces for extended periods of time, ranging from months to even years. It is important to pinpoint a testing location where indoor smoking is common or suspected, or where dust tends to accumulate.
Consider testing the following common household surfaces for the most accurat results when assessing for cigarette or tobacco smoke residue.

Walls or ceilings

Ceiling fans

Door frames and shelving

Window sills and frames

Ceiling light fixtures

Picture frames

Non-fabric furniture

Air condition vents