I'm not a fan of sand (except for sand-bathing containers), although many BYC members swear by it and have good luck with it. I live in a very windy and dry climate and do not want to see any more sand, dirt, or clay than I already see around town naturally. My chicks are now 8 weeks old and have been in their coop and run for almost 4 weeks. I started with pine shavings in their brooder and and because I had a bag of shavings left, dumped it in the coop and run for our first trial bedding outside. What a mess in the run! It blows around and gets into everything and gets tracked around the yard and even back into my house on the dog and on our clothes, shoes. On a smaller part of the run, we put 100% natural pine bark mulch. It looks nice and woodsy and coordinates with the rest of our backyard landscaping. My chickens have been using the run for almost 4 weeks and I haven't even had to think about cleaning the run - neither the pine shavings or mulch areas. It seems that the poop just gets covered up or disintegrates into the pine shavings and pine bark mulch. I'm sure eventually it might get gross or smelly and then I'll clean it out. I have even thrown cantaloupe, cabbage, lettuce, corn, etc. in the run and after a day, there's nothing to be seen or found (except the cantaloupe rind or a dried up corn cob). When ready, we'll cover or remove the existing shavings and use the pine bark mulch exclusively throughout the run. We bought 100% organic with nothing added to it from a big box store. I think a lot of the choice of bedding for run and how much you clean depends on your environment, weather, and setting AND what you feel comfortable with. In the coop, the shavings work better and since they sleep all huddled on the floor in one spot, I clean the pine shavings and poop out every 2-3 days or so. I'm going to try Sweet PDZ granular in the coop though to make it easier to collect the poop only. I'm putting it off since they're still sleeping huddled on the floor and I assume pine shavings are more comfortable than granules, but I'm ready to say bye-bye to shavings.