We have used a plastic automatic waterer for my wife's dogs for the last 2 years and it required a lot of maintenance, the plastic cracked, it leaked, and the float was only adjustable by bending the float arm. We received our new Little Giant (Model 88SW) galvanized steel automatic waterer today and what a difference. It is made out of really heavy gauge galvanized steel and the float arm is adjustable. I can't imagine this thing ever breaking like the plastic model and it only cost $5 more. It's a no-brainer, BUY this metal version.And, it is MADE IN AMERICA ! ! ! !