8 in 1 Small Animal Flea and Tick Spray Even the little guys get fleas. To keep them flea-free, use this tough and effective formula. Features: Controls fleas and ticks on hamsters, gerbils, guinea pigs, and mice. NOT recommended for ferrets. Gentle for your pet. Can be used on your pet and in their cage. Item Specifications: Size: 8oz Ingredients: Pyrethrins 0.06%, piperonyl butoxide, technical* 0.6%. *equivalent to 0.48% (butylcarbityl) (6-propylpiperonyl) ether and 0.12% related compounds.