My experience mirrors goodb's exactly. I'm so glad that I went with DL...I use it in both the coop and the run. Had a horrible time with a strong ammonia smell when my daughter-in-law set up the watering tractor and didn't monitor it. It jumped the track and came to rest against the run - for hours. Do I have to tell you how bad the litter, food, and dust bath container were? Soaked!! UGH! But I just took out some of the shavings, turned it all over, and added some more dry fresh shavings. It took a few days for the wind and sun to dry out the litter while I turned it a few times a day, but within a very short time the entire DL system corrected itself and I've had no problems with it since. Oh, and my daughter-in-law no longer waters the lawn when we're out of town!
I don't use DE in my shavings. I have dirt floors in both run and coop, and I want the little critters living in the ground to come out and do their compost-assistance thing. So I don't want to kill the very organisms that are so vital to the success of the deep litter.