I have construction sand for the bottom of my run. It’s easy to clean, and plenty of grit!
How long have you been using sand? How often do you have to scoop it?I have sand in both my run and coop. I find it extremely satisfactory, and so do my chickens. It's for runs covered against being saturated by rain and snow and needs trenching so runoff doesn't flood the run. Soggy sand is just no fun.
I used plain sand under the roosts before my new setup and it got really stinky after about a year, just from moisture buildup I guess. Now I use Sweet PDZ under the roosts and scoop daily, but I can't imagine having to scoop out a whole run. PDZ is compostable, though I don't mind a little sand in my compost too (makes nice loamy soil) but not a whole truckload. How do you keep it from smelling? And what will you do with it if you need to change it out? It seems like it should last forever, but my short experience with it makes me wonder. Maybe I did it wrong.