Waterfall Foam Gun Homeowner Bundle Pack 1 Foam Gun, 3 Cans Foam, 1 can Cleaner 3 (24oz)Cans: Seal gaps and fill voids between streambed & waterfall rocks and stones Stabilizes rockwork in Koi ponds, water gardens and pondless waterfalls; Moving water travels over (not under!) rocks and stones for dramatic visual effect; Fish, aquatic plant and wildlife safe. Rugged Plastic, durable construction; Adjustable bead control w/immediate shut off; Non-stick teflonized basket Gun Cleaner: (1)12oz multi-use can Cleans foam applicator tools; Dissolves uncured foam & adhesive