Abstract: An animal fumigating unit is provided for defleaing animals. The unit comprises a container having a rotatively displaceable rear wall and having an opening in the front wall to enable the head of a contained animal to project exteriorly of the container. A flexible material is attached to the container and covers the opening. Radially symmetrical slits in the material intersect in alignment with the center of the opening enabling the material to fit firmly around the animal's neck.