I've been doing lots of reading, researching, and applying the same chemicals that exterminators use with some success. I use a combination of an adultcide Permethrin and an IGR Precor. It's been over 3 weeks now and I still have fleas. Although I'm also using Frontline Plus on my dog who is permanently outside now and he still has fleas as well? I'm hoping that by vacuuming, and retreating I will eventually get this problem under control for good.
It's hard to evaluate IGR concentrate because I am using commercial spray can, diatomaceous earth, and vacuuming in combination IGR. California is having a problem with ants this year and fleas are a new feature of the season.
Probably my fault for misunderstanding the products use, but I thought this product killed adult fleas as well as developing eggs. After using Precor and not getting the desired results, I called Customer Service and spoke to a representative who assisted me in purchasing the proper combination of pesticides for the flea issue I am having. I can say, however, that there doesn't seem to be as many fleas jumping on me as there were prior to treating with Precor and I should probably have consulted with Customer Service from the beginning.