well I dont have any experience with it yet but we are planning on using sand for our ducks winter run. The run will have a roof and under the sand will be a layer of gravel to help with drainage. I figure the sand and gravel will be alot better than topsoil for ducks since it should be harder for them to turn the pen into a mud pit lol. I guess basicaly they will have a giant sand box to live in for the winter and it should be fairly easy on there feet to.
Go to frequently asked questions it is the first forum. There is alot of info on De and Sweet PDZ. I had to order my DE online and since its heavy the shipping can be alot . I wish I could find it here but can't. I get Sweet PDZ at a farm feed store so I can get a 50 lb bag and not pay shipping. ( its pretty heavy to).