Happy Jack DD-33 Flea & Tick Spray contains two active ingredients which kill fleas and ticks instantly and keeps them off for days. DD-33's new formula is water based (unlike similar sprays which are up to 40% alchohol) and therefore gentle to the skin and hair. It is formulated for minimum toxicity to dogs and cats, including the most sensitive breeds.  DD-33 is citrus scented and contains Pyrethrins and Permethrin. 16 oz. spray bottle.