My gals have been on a nipple waterer since they have been 5 days old. They took to it great and I loved it. They are now 22 weeks old and I noticed that they run to the dog bowl when I let them out in the morning. I clean out and check my nipple water 2 x a week. It is working fine. I watch them use it. I wonder if the output is not enough. It does seem to let out a trickle. Has anyone had this experience?