The PetSafe SSSCAT Spray Deterrent monitors for movement up to 1 meter away. When your pet is detected, the spray deterrent sends a quick, safe spray that startles your pet. Your pet quickly learns to avoid areas that are off-limits. The spray is odorless and safe and is a sufficient stimulus to deter pets from jumping on kitchen worktops, digging in rubbish bins or entering restricted areas. It is effective for both cats and dogs of all sizes and breeds.