PetSafe SSSCat Deterrent Unscented Refill Spray Pack of 6 Total of 23.34oz 6 Pack of the Ssscat Repellent 4.5 oz Refill Canisters Refill repellent for the PetSafe electronic motion sensor HFC134a gas is a harmless, scentless spray used to surprise the cat intruder without leaving any residue This highly effective spray is scentless, ozone friendly and nontoxic to animals and children 6 Pack of the Ssscat Repellent 4.5 oz Refill Canisters Refill repellent for the PetSafe electronic motion sensor HFC134a gas is a harmless, scentless spray used to surprise the cat intruder without leaving any residue This highly effective spray is scentless, ozone friendly and nontoxic to animals and children This highly effective spray is scentless, ozone friendly and nontoxic to animals and children