Well, I found a few baby rats in one of my feed barrels a couple of weeks ago; the feed was so low that they couldnt get out. So I dispatched of them, and figured Id better put some bait out, since if I saw 2 I probably have 6. I got that Just One Bite, thats its little blocks with holes in them. I put a nail thru them, hammered them into a piece of board, and put them where no one could get to them. I put them out in the evening and pick them up the next morning before the puppies go out. In 2 weeks Ive picked up over 100 rats!!! What the hell??????? I had no idea, there was no evidence, other than a few bags chewed on once in a while. The first couple of days I found some big dead ones, then came the family. I cant believe it, each day Id pick up 5 or 6 dead ones. First they would be nearly grown, then a little smaller, then a little smaller, then a little smaller. Now Im working on the mice sized ones. I was in one of my kennels yesterday, looked up, and where the tarp covered the plywood, there were 5 rat faces looking at me, waiting for me to put the bait up there!!! This bait takes a few days to work, since rats are so smart, if they eat it and die right away, the rest wont come back, so its been a smorgasbord for the last 2 weeks. Ive gone thru 2 packages, and will have to get more. Ill keep putting it out until they stop cleaning it up every night. If you see evidence of rats, START NOW! They are taking over the world!