I dislike them, though I get the eco reasons for them.
I live in a flat in a city centre with a small kitchen. When I first moved here, having one kitchen bin was sufficient. That alone took up enough of the limited small floor space. Then we had to add an additional bin, so we could sort recycling. Now we dance around two bins, needing to move one every time we need to get into the cupboard they’re in front of.
My kitchen counter space is very limited, as is cupboard space, but I’m now expected to magically expand my kitchen once again to somehow find room for a third rubbish receptacle in the shape of a food caddy. And it stinks and makes me heave every time I have to open it to scrape food waste into it. When it was mixed in with the other rubbish in the black bag, the smell was far less, and it was changed twice a week. Now I’m expected to use that food bin for a week, and I can tell you that any leftover fish from 6 days ago is extremely fragrant, to the point it is absolutely nauseatingly disgusting.
The foxes get into the outside food waste bins easily, causing a lot more mess to be cleared up.
So all in all, it’s been a big negative for me personally.