How to clean: Apply a few drops of detergent to the bottle. Grab the two ends of it and shake for seconds. Pour out the liquid, fill it with water and rinse. DO NOT NAKE TAP-WATER RUN RIGHT TOWARDS THE OUTLET(the steel ball) in case of possible displacement of the valve inside. Away from Leaks: ✓keep water clean ✓make sure no hair or fur attached on steel-ball ✓no grease stain ✓no small articles on the ball. Food-grade stainless steel balls and built-in silicone sealing ring provide leakage protection. Made of durable PP, ABS, PET materials, BPA FREE, safe and non-toxic. Easy to refill the water through the top opening, and no need to take off the bottle. Please keep the top lid tightly sealed after refilling to avoid leakage. 10mm 360° one-piece nozzle can be used inside or outside. Designed for for small animals: Rabbit, Chinchilla, Ferret Guinea Pig, Squirrel, Hedgehog. Worry-free Services: Full Refund within 100 Days if quality problems occur. Please do not hesitate to contact Septillar After-Sales Team.