I've read and had various experiences with the HN's.....the main key might be starting them out at a day old with no other waterer exposure.Good info thanks for that aart. I admit I haven't tried them in a thin walled jug.
How old were the chicks you've tried to get onto them? I might have to make a new drinker pail today and see how they get along. The brooder has birds from 9-25 days old in it, with shavings and a lipped pail Someone, somewhere didn't recommend the horizontals for chicks less than 10days IIRC. They sure would nice to use for younger chicks, my current turkey chicks just love to rattle the vertical nipples until all the water has drained out into the shavings. They are worse than my kids for making a mess, lol.
I've always been to nervous to do that, tho I did have some 2-3 day olds pick it pretty quick...all the others took longer to figure it out.
From what I've seen there's no hard and fast 'rules' that garner success...tho removing all other waterers does help,
but can be nerve racking and should not be done in extreme weather where dehydration could be seriously quick.