Don't buy your cyprus mulch at pet stores. I've had trouble with buying bedding there since they also have reptiles and the mites (If they have them, and it wouldn't surprise me if they always do) could easily get into the bedding, then you take it home and now you have mites. Pet Smart is where I got aspen that had mites. What a pain in the neck it was to get rid of them.
It's been about a month and a half, and no sign of them yet, still worried.
I buy my cyprus mulch at home depot. It their garden center outside, they have a huge bag for just a few bucks. It's all natural and looks great. No issues with it so far. Two of my snakes like to burrow, and every morning when I get up, their cages are all rearranged haha, they seem to like it.
And when I clean their cages completely and change out the mulch, I just dump the stuff that was in their cages in our hedges outside, looks nice and you get even more bang for your buck.