We have rats here too.But maily in the coop area's horse stall etc.Most of the rats here are burowing and if We put any poison out We make sure it is contained or put in the hole's.I have a poodle which has never bothered dead thing's here what ever it may be but have always kept a close eye for our neighbor's Aust.shepard cattle dog.She has been a natural groundhog killer and We have seen her going for rats in the past before We started putting ou the poision's.She is a pretty much common everday fixture here again now so maybe since We are back up and running again the rat's will move on I hope.