SSSCAT cat training aid has two components: a patented motion detector device and a can of harmless, non-toxic spray. Each time your cat approaches the restricted area, the detector senses his movement, releases a warning sound, followed by a brisk spray. The cat gets startled by the sound & spray action and vacates the area. You can adjust angles between detection and spray directions according to the expected action of the device. You can also adjust the direction of spray up or down. SSSCAT can also be used in outdoor areas where cats or other small animals can be destructive or where they may get injured. What’s Included Adjustable SSSCAT™ motion detector Can of harmless HFC134a gas User guide Requires 4 x AAA batteries (not included) SSSCAT Spray Refill - available separately. The ultimate cat control system Motion detector activated Harmless, painless Scentless, stainless Repels cats for up to one metre Leaves no residue Requires no training 100% safe for humans, animals and the environment Free Mainland UK Delivery.