I need to buy some more litter for my hamster's potty but some of it is quite dear. I've heard people use chinchilla sand but again, that's quite expensive, plus she already has a sandbath which she plays in and I don't want to confuse her by using sand in her potty as well.
Out of all of them, I'd go for the paper based litter, as I know this to be safe. If you have an asda or a morrisons near by, they sell paper based cat litter too.
I stick with the potty litter. I buy it in bulk, which yes, can be quite expensive, but I'm scared if I use another product they will forget and pee elsehwere!