Ideal for avoidance training? Sprays odorless, non-staining gas to keep your cat off of furniture, countertops and plants. SSSCAT Spray senses your cat within 1 meter, then emits a startling, deterring spray. Contains odorless, non-staining gas, harmless to pets and people. Approximately 150 sprays per can. Refills available. Requires 4 AAA batteries, not included. Sorry, this item cannot be shipped air service.