PetSafe - Recambio para corteza en aerosol, cartuchos de repuesto para el collar de corteza de pulverización, cartuchos de repuesto solamente, collar no incluido, paquete de 3COMPATIBLE COLLARS: The PetSafe Spray Refill Citronella is for use with the PetSafe Spray Bark and Training collars; it is NOT compatible with the PetSafe GentleSpray, Elite Big Dog and Little Dog Spray Bark Collars or Elite Big Dog and Little Dog Spray Trainers EASY TO REPLACE: The refill cartridges are easy to replace; simply remove the empty cartridge and replace with the new refill cartridge 100% RECYCLABLE: The disposable PetSafe Spray Refill