Four Paws Wee-Wee Pad On Target Trainer Containment Systems Assembly requires attachment to wall

Assembly requires attachment to wall surface for safety

With a series of hook and loop wall fasteners and a zip-on roof

Replace them every 2-4 weeks

The red light will flicker and remain on

Four Paws Wee-Wee Pad On Target Trainer Containment Systems Assembly requires attachment to wallThe On Target Trainer helps to keep a dog centered on the pad and properly positioned for perfect aim. The pad holder tray features built in clamps, which keep any standard size potty pad firmly in place and secure from playful puppies or slippery floors and carpets. Made with durable plastic for easy care and lifetime use, the unit snaps securely together in seconds. Tray size measures 22. 75"L x 22"W x 1. 5"H with 7" high removable walls. Pads sold