Rust-proof aluminum (not crack-prone plastic or rust-prone steel like theirs). Hand-welded Quality. The key to a long lasting, dog waste station is the POST. We use only square,12-gauge, galvanized posts. Don't buy a station with a resin, u-channel, or aluminum post. They rattle, shake, twist and bend and are not strong enough to last. Professional Park and Property Managers have made our Dog Stations #1 for 14 years in a row. 5-Year Warranty. Value Priced. Built to Last. Our stations don't have our brand name on them. We don't advertise our name, on your property. Lowest Price. Largest Selection in the USA. SHIPS FREE TODAY.