John has done work a couple of times at my house, which seems to be a magnet for squirrels. The first time he installed a few one way doors to help moms and babies safely out from the attic. The second time was to trap a squirrel who nested in my chimney stack. He creatively secured the area and humanely captured the black squirrel, cleaned up the area where the nest fell to, and then proceeded to screen over the stack where the squirrel entered. John is kind and respectful, and knows his work well. Please, stay away from overpriced corporate companies that will try and up-sell you...call John Grady and support independent, local and reliable businesses. If you have a critter problem I highly recommend John.