I have 14 ASF S&F corn feeders and 4 ASF S&F timed protein feeders, both basically the same design. I have had none of the problems list by some above, and almost all of mine are not in feeder pens. The 4 protein feeders are in pens to keep the cattle away but have 2' x 2.5' openings on two sides to allow blackbuck to get to them. Eight of the corn feeders run year round and the only issue I have had thus far with any of the feeders is one "The Timer" screen blacked out and another timer stopped working all together, both were replaced no questions asked under warranty. One corn feeder does have a pretty messed up battery/spinner access door because it was left open and am guessing a cow got after it. The ranch has cattle, hogs, javelina, exotics, and deer on it and I have no complaints thus far with their quality.