 Well, you've got to call it the best thing to do if you get a mini is either have us or another company with a canine. The dog comes out. Seriously, walk around or give it to the handler and go, here's post-it notes. Tell me where all the bed bugs are. The dog will tell you everywhere where the bed bugs are. The dog leaves, and then you get to work, and you just treat those areas. Even if you can't see them, the dog can find one egg, and you kill it. That is the most effective way to use this device.