Deciding What to Do > Pest Management Principles
How?
 
So will an insecticide get rid of Ellen's cluster flies?

 
Correct answer! The flies are huddled in the walls and come out only on sunny days. It would be very difficult to get the insecticide to where the flies are.

Yah, you might have the satisfaction of seeing one or two of the flies drop, but you are not going to control the problem.
 

 
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