Great, unless one is leaky. Easy enough to fix, though.

When functioning as intended, they are awesome and solved the freezing issue we had with the vertical nipples in single digit temps and below. These have hit negative double digits without freezing. The only issue is that 1 of the 5 nipples has a rod that drags and therefore doesn't seat right after the chicken uses it, meaning it was emptying our 5 gallon bucket pretty much overnight. Big problem in sub zero temperatures. I am going to try taking it apart and seeing if cleaning it can fix it. EDIT: Took out the one that was leaking and inspected more closely. The issue turned out to be the spring inside wasn't properly seated and was keeping the o-ring from sealing. Quickly reseated it with a knife and it's working perfectly!

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