I have a terrible smell in my run. It is not pooh. I am a neat freak so I clean the sand run about every other day. I think the problem is the rain we recently got. I thank God for the rain. We really needed it here in south Alabama. I think the smell is coming from feed. I have five approx. 8 week old chicks. They seem to waste as much on the ground as they eat. I think that since the sand is damp/wet that the wasted feed has soured. I am new to chickens so I don't know how to handle this. I removed a bunch of sand around the feeder yesterday but that is not a practical way to deal with it. Any suggestions would be deeply appreciated. Thank you all!!! Love this web site!