A feline rescue is constantly battling fleas. Even though volunteers regularly wash and treat bedding for fleas, they still have infestations pop up from time to time. It is difficult with cats coming in and out as they are being rescued and then adopted. The key, they know, is to stop the fleas from hatching! One volunteer suggests running a dehumidifier in the facility, particularly in the area where they keep newly rescued cats. How might this help with the flea issue