Simply remove the empty cartridge and replace with the new one. The citronella scent is harmless to your dog and is meant to act as a distraction to help stop nuisance barking. The PetSafe Spray Refill cartridge is 100% recyclable and safe for you and your dog!  Citronella scent.

Features

• Compatible 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 cartridges are 100% recyclable
• Pleasant Citronella scent

In the Box

• 3 Citronella Spray Refills