Increase humidity, spray less, get more feeder insects eaten, and clean your container fast! The humidity foam fits snuggly into the bottom of any 4.75 inch insect cup. This gives feeder insects no place to hide, and makes cleanup a snap; just pull the Humidity foam out, rinse it or wash it in the dishwasher, and you are done! No more insects drowning in puddles, and if you can't spray for a while, just soak the Humidity foam with more water. Mantisplace.com is now using this system in it's Mantis inventory with great results in humidity maintenance, quicker and easier cleaning of the container, and no hiding places for food!