I was battling rats in my attic since we bought this house, almost 2 years ago. Arcadia is roof rat central in Phoenix, so I was about accept our cohabitants forever. After an unsuccessful attempt from those guys that drive the mouse car (you know who you are), I finally called Critter Ridder. After 10 minutes of the free inspection, they knew what the problem was. The 'other guys' quoted me $1200 with NO guaranty, but Critter Ridder fixed my attic rat problem with one visit, for $200. If you have roof rats in Phoenix, don't call anyone but Critter Ridder.