When we bought the stainless steel counter-top compost bin shown in the picture, my wife and I also bought some of the BioBags. She liked them; I didn't. (I like the bin, though). The BioBags are oversized for the bin, so you have to tie them around the rim, overlapping the bin, which ruins the stainless steel look. THen, the bags leaked or split, so I 'd have to bring the whole bin and the bag to the compost pile anyway. When we ran out, I didn't buy more and it's been fine without them. I just run the bin through the dishwasher once in awhile. Regarding degradability, I noticed they didn't break down as quickly the vegetable matter, but they did break down eventually, so they weren't a problem (I just dug them into the soil). Long story short, if you are really into composting, they don't add a lot of value. And they're pricey, to boot. Why spend the money?