Garden poo bins

I've seen mixed reviews for different sorts. I would think a lot would depend on how free-draining your soil is, how large your dog is, and what you feed him. My dog is raw fed and I find the poos are much smaller and less stinky than kibble-fed dogs, and it degrades very quickly in the garden if I don't get round to picking it up. So I have wondered if it's an option.

I'm not sure if it's more environmentally friendly than alternatives though, particularly as with some you'll have to keep buying the activators. I pick up poo in bread bags which I keep stuffed behind a bush and use a few times before putting it into the landfill bin - the bread bags aren't recyclable so they'd end up in landfill anyway.