They work ok with hogs the great majority of the time. The feed head height is generally 38" to 40", or higher than many pigs will try to reach. So, most pigs will feed below on what has fallen out of the tubes. But, every once in a while you will get an angsty boar who will stand on his hind legs and do his best to wreck the feeder. I have many feeders out with customers, most with polymer feed heads. I'd say 95% never have problems with pigs.
Of course the best solution is build a pen around the protein feeder, but guessing you have already evaluated that.
Feel free to PM me for more info.
Edited by TxAg (06/06/16 11:04 AM)