A year ago, my next door neighbor threw mothballs everywhere in the alley to deter pests. The smell was horrific for quite a while and kept us out of the backyard. This fall, he has now spread rodenticide pellets all along the fence in the alley behind his house. I am worried for all the critters this will kill. We don't have a rodent issue - he just doesn't like squirrels and in his infinite wisdom thinks that his poison will eliminate them. Now I am afraid to let my cat outside even though he never leaves the yard.