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.