Delcon came to my house and sprayed on July 1, 2009, they have a 3 week guarantee. I saw desert insects after 2 weeks, called Delcon on July 16, 2009 to return, scheduled for Monday July 20, 2009, and they said there would be a charged because me 3 week guarantee ended on July 15, 2009. WHAT?! I don't when when 15 days became 3 weeks. I just can't believe it. So I just wasted money on a company that doesn't stand by their guarantee and I still have desert insects around my house.
Cons: 3 week guarantee is only 15 days according to Delcon