We had rats in the neighborhood because we live close to a freeway and it's lined with trees and shrubs to shelter rat populations. As a neighborhood we cleaned out our sheds, garages, wood piles, thick brush, and chopped down all our old and dying trees. None of my bordering 5 neighbor yards have a tree left standing. It cut down on tree hopping from yard to yard by the local squirrels, raccoons, possums, stray cats, rats, aerial predators, etc. Because of our pet chickens we couldn't chance using poison and rats are too clever at avoiding snap traps. We resorted to large glue traps and we caught 1 sparrow (my DH let him free), 3 rats, and 2 mice, and our Leghorn found a baby rat nest and chewed them up all over the yard! We leave the patio night light on beside the coop and no night critters have visited our backyard in the past two years - the light seems to deter them. The rats couldn't get into our coop but they were chewing through my veggie garden bed netting and were destroying my neat garden. I was so glad to get rid of the rodents and wouldn't hesitate to spend the money to get more large glue traps again if I need to. We had a cat for 17 years that brought us only one rat and one mouse in all that time - usually she brought us birds and lizards so we never replaced her with another cat when she was gone. The glue traps work best for us for rodents (the glue catches a lot of spiders and insects too).