I have these huge bins and I mix my laying material with all sorts of things in them and then scoop what I need out for the nesting (egg laying) . So I try to get creative with the mix with a little bit of everything in them. I do this because I have so many clutches and it becomes like a factory batch of cookie dough with a million small ingredients.

For instance yesterday I had a litte perlite left over from last year and I threw that in as well..but it ends up being a small amount.

experimentation is the fun part..to see what works best