Abstract: An insecticide applicator for animals is described which is comprised of an elongated hollow tube which is filled with insecticide dust at the factory. A closure element seals the end of the tube and also provides a mounting structure to enable the tube to be secured to a suitable mount. The tube is provided with a plurality of spaced-apart ball-like protrusions which extend downwardly from the bottom thereof and which are removed at the point of use to enable valve members to be inserted into the openings created by the removal of the protrusions. When all of the valve members have been installed, the tube is rotated 180.degree. and is positioned in its supporting mount. When an animal rubs against the tube, the valve members move upwardly in their respective valve openings so that the insecticide dust flows downwardly from the interior of the tube onto the animal.