We have one of these waterers in our brooder: The problem is that our 2-week old chicks poop in it and fill it up with their bedding (aspen shavings) about every 2 hours - to the point where they can no longer drink out of it. I've tried elevating it a little bit, by putting it on top of a small piece of 2x4", but then they just knocked it over. There are times I can't be around to change the water every 2 hours. When I do return and change it, they seem very thirsty. It seems like there has to be a better way. Is there? Thanks.