The four things you want in an exterminating firm are: 1) Did they arrive at the time(s) they said they would? 2) Did they do everything you asked them to do and/or that they said they would do? 3) Where they professional and did they explain everything so that you could understand what they did? 4) Did they resolve your issues and if not, did they make it right in a timely manner? In my case, all the answers were YES except #4 because they DID get it right the first time! Cost is never a factor if you get what you paid for and I did! These guys are great and I highly recommend them.