So you toss your environmentally friendly "MAGIC BAG" into the trash can or dumpster. Most places compact their rubbish anymore, so likely the bag ruptures before the "Magic Happens", so the feces is smashed out into the rest of the trash, right?
Net gain?? Or just expensive nice try? Maybe, in some situations, the best alternative?
Cassette toilets dump where you decide to dump them. That can be any rest room/water closet/out house/toilet that is handy/available.
Obviously it is nice to have a hose handy to rinse a couple times, then send the rinse water into the same sanitary place, but it is not a necessity every time. Alternately, rinsing water can be carried in your camper or fetched from a non-potable source, and it doesn't take very much water for a couple quick rinses (rubber gloves are a nice touch for this process, but with practice, not necessary).
Cassettes may not be to everyone's liking, but they do work well, are cheap (after initial purchase) and reasonably convenient.....
Dumping, rinsing, and replacing seems to be a male function (at lease in our camper..
.)
Fb
Additional: We only use the house cassette toilet typically for night time (urine) use if in a campground with sanitary facilities-unless the facilities are unusually rank. If we are dry camping we have a second cassette to fill, then it is dump time.