I mixed a BIG bag of potting soil from Sam's with only one bag of fine hemp. That's it! I have no condensation build up at all. From what I'm seeing I shouldn't need to replace the entire mixture maybe once a year, twice a year at most.
I just thought about it, its going to become part of my garden probably in the spring, so I will use all or half of that and just add half a large bag of potting soil and HALF a bag of the fine hemp. Potting soil absorbs water rapidly and dries out fast, so does the hemp. So, it was like hey .... it sounds eggs....actly what I need to do. I've not read where anyone has tried it before.
Being in Mississippi, well let's just say it rains a lot. Like our lake come up 2 VERTICAL FEET in one week! A few days ago, we were 7 degrees, so we have definite temperature challenges at times.
Oh, when it comes to the chicken run, we also TARP the entire thing to lessen the weather changes. Right now we are doing the deep litter method in the chicken run with pine shavings, but I will probably change that to the coop's method (fine hemp and potting soil) after I clean it out in the spring. It's going to be pricey but SO WORTH IT!