I bought a pail of this product. It did eliminate most of my rodent problem. However the bait tends to dry out and crumble to a powder/granules in the bait stations and bucket. I live in Arizona southwest and the high temperatures causes the bait to melt into a lump and is very difficult to remove and clean from the bait traps.
Consequently, most of the bait was wasted due to these problems.
We specifically bought these for a pack rat problem. But what it'd do was take the blocks to wherever it was planning on building it's winter nest. It maybe nibbled on just a couple, but took the rest (which, we put out about 12 blocks). So, not sure if it ate enough to poison itself. Long story short, what ended up happening was that we spotted it (as in one pack rat) moving from one vehicle to another and took care of him(yea!) Haven't seen any others (knock on wood). But if we do, we'll be prepared.