DD-33 FLEA-TICK SPRAY 16OZ, DD 33 Flea & Tick Spray is a citrus scented, water-based formula that contains 2 active ingredients (0.112% pyrethrins & 0.101% permethrin) which kill fleas and ticks instantly and keep them off for days. Easy-to-use trigger sprayer means no aerosol noise trauma or solvent irritation. Gentle to skin and hair. Formulated for minimum toxicity to dogs and cats, including the most sensitive breeds. Can be used on toy breeds.