Kmart collapsible bag toilet
An absolute game changer.
I bought one of these when they were first marketed and I've never looked back. They are really compact and require no chemicals (unlike your average portable loo).
They work on the same system as bagging out your waste when hiking which is now preferred.
I double bag mine. You get some bags provided but, when they run out, the large scented kitchen bags fit. Depending on where I'm depositing the contents, I'll either line it with a second scented bag (general waste) or fully compostable bag (for burying/long drop/composting loos). Only the certified composting bag is deposited but I'll double bag the scented bags for general waste.
What is deposited into your loo (beyond your own waste) is dependent on how you're disposing of it. Long drops can handle toilet paper but don't add anything that will create a bigger stink.* Compostable toilets can handle loo paper and organic matter. If you have to bury that compostable bag (emergencies only) dispose of your loo roll in general waste. Double bagged scented liners destined for general waste can handle everything including wipes but, in this instance, what is forcefully coming out of you should stay out of general waste (and a public bin).
*stay tuned for how to keep your bags stink free
https://www.kmart.com.au/product/folding-camp-toilet-43456413/
/2