October 14, 2010 which months are fleas active 0 Which months are fleas active in Georgia? I treat my outdoor cats with Revolution but I don’t want to use it unnecessarily – during the months that fleas are inactive. Please advise. More on which months are fleas active Tags: adult fleas, flea larvae, flea prevention, flea problem, flea problems, outdoor cats Spread the Word! Facebook Google+ Twitter Pinterest Email Print Delicious Digg Fark Google Instapaper LinkedIn MySpace Newsvine Pocket Readability Reddit StumbleUpon Tumblr Yahoo!