Although the jury is still out as its only been a day since the treatment, I really enjoyed Larry's work as he expalined and informed us about the habits and idiosyncracies of mice. He was extremely thorough and discovered where they were comming in and showed how to plug up the hole as well as lay bait and traps for any mice still hiding out - he assured us a guarantee although I suspect we won't need it. Good experience, informative and helpful.