I called Alert Pest Control for a rat problem and they went back three times and set traps, but I didn't see any rats trapped. But, the service was great because they came out and did what they said they would do. Unfortunately, I don't think they caught anything. I felt like I paid for nothing. I don't feel it was cheap for what I got, but I also haven't seen any rats--so I don't know if it really worked or not.
I use them for rental properties and don't know about how everything worked unless I hear from the tenants. We have also used them for cockroaches in apartments, and I have heard that the service worked very well. However, they charged a transaction fee which is irritating to me. But, I've used them before and would use them again; you get what you pay for overall, and it was fine.