I bought a bucket with nipples already in it from my local feed store, it drips. Not constantly but enough that the litter is damp under it. I also got some nipples from Amazon to make my own waterer...those leak too. So I'm a little gun shy of spending any more money on nipples but I love the idea of them for getting water to my ladies. Where is the best/cheapest place to order nipples? I only have 7 chicks so I probably only need 2 or 3 nipples. Also do you recommend screw in ones or push in ones?