
I use two of these attached to a high pressure flexible hose. (I used an old washer hose with a brass male to male attachment on one end.) Pretty easy to clean.
The directions say not to use a bike tire valve when you need to replace the original (mine needed it after about 10 months), but I did and saved a lot over buying their expensive replacement part. When the valve went, it did drip, so I wouldn't put them over anything that needs to be dry.
The hens knock into them sometimes and water spills with the flexible hose too.
I also had to winterize the hose so that it wouldn't freeze. I used the foam tubes at Home Depot and attached plastic water bottles around it so the chickens would stop eating the foam.
They work well for me.