Easy to install and use.Just monitor for nibbles and dead miceSo far so good. I haven't seen our mouse or his/her droppings since I placed the bait. I am hoping it went outside to shuffle off this mortal coil because so far, I haven't smelled anything decomposing. I very much like the way this bait is packaged. It is inside a plastic container, where the mouse has to turn a corner to get to it, and which would make it very difficult for a dog or a child to get into. I appreciate that a lot as I have two beloved dogs. Because of them I was very nervous about using mouse poison, but where these boxes are, they can't get to them, and if by some strange turn of events they were to get displaced and be out in the open, the dogs most likely would give up long before they got to the poison.The user does not come into contact with the substance at all. It comes all ready to go.Does the job.These work great. I have significantly cut down on mice in my garage and sheds. I know the mice find these because the green blocks disappear and there are droppings near them. But, I'm NOT finding the dead mice, so they go back outside once they eat the chemicals! Since using these, mice nests are non existent for me to deal with! There is no contact with the chemical for me or my dogs, which is great.I still use gloves to clean up and throw these away.The mice just ignore the traps, walk right past them.Follow-UpUpgraded to a three, due to it working on the following years mice who didnt completely ignore the traps, and yes i know the mice ignored the traps the first year because i put cameras facing every trap I use ( Makes it easier to fix holes mice come out from, and shore up your rodent eviction policy.)great when pets are present. was always concerned with cats or dogs getting into the mouse traps but have had no issues to date with these and do a great job and controlling mice in our tack shedsRecommended by a friend. I put one in each vehicle in the engine compartment using velcro tape. Mousies have been nesting in the fan duct. Would be better if they supplied the velcro strips. Looking forward to success.I tried the humane way as I am an animal lover at heart and just couldn't bring myself to poisoning my uninvited guests. However, the humane way was not working and just allowed my new guests to breed and the thought of them overtaking my house was disturbing. I purchased this and within a few days I no longer heard the little squeaks or seen my furry guests. I recommend this