I called Critter Control in the morning and explained that I thought I had dead mice under my house since my back patio was swarming with flies around the vents. I asked if it was possible to have the work done that day in the afternoon. The very nice woman on the phone said she would phone her father and one of them would get back to me in an hour or two. Sure enough, I got a call from Jeff who said he would come out after one and would call me later to let me know the exact time. He came out at 2:00, saw the area in question and pointed out that one of my vents had a large hole in it. He went under the house and found a dead skunk and opossum. He didn't have the exact screen size of my vents and, because of a shed, it was impossible to get to the vent completely. However he put up the screen he had which partially closed the hole and advised me that when the shed was replaced, to make sure to put on the proper size vent cover. Both Jeff and his daughter, the woman who answered the phone, were pleasant and professional. She quoted me $250 unless it was a difficult removal in which case it could go up to $350. Jeff charged me $250 which included covering the vent hole as much as possible. I would definitely use them again if I have any more problems.