That's a classic urban headache, isn't it? You pull out the bag and the whole liner just slithers down into the can. Drives me nuts! After years of trial and error, here’s what actually works.
First, the classic and most reliable method: use the can's handles or rim. After placing the bag, pull the excess liner over the outside of the can's top. Then, take the bag's drawstrings (if it has them) or the top edges, and tie them in a simple knot around the handle or the rim's lip. No drawstrings? Use a simple binder clip or a sturdy rubber band to cinch the bag tightly to the outside of the can. It creates an anchor point that prevents slippage.
For cans without handles, double-bagging is a surprisingly effective trick. Place one bag as usual. Then, put a second, identical bag inside the first one, but rotate it so its seams are opposite the first bag's. The friction between the two bags dramatically reduces the chance of both sliding in together. You can also use bag liners with a grippy edge – some are textured or have a sticky adhesive strip that clings to the can's interior top.
My personal favorite low-tech hack for standard plastic kitchen bins: create a DIY rim lock. Before inserting the bag, place two or three strong, spring-loaded clothespins evenly around the interior top rim of the can. Drape your bag over them, letting the pins grip the plastic. When you pull the bag out, the pins stay on the can, ready for the next liner. It’s foolproof.
Ultimately, preventing the fall is about creating friction or an external anchor. Skip the fancy gadgets; a rubber band, a clip, or just tying a smart knot makes all the difference. A secure bag means no fishing around in the bin and a much more pleasant cleanup!