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