We use folded newspapers at the bottom of our recycling bin, because no matter how one tries to empty milk cartons, bottles etc they always seem to dribble a few drops in the bottom of the wheelie bin and make it smell. The newspaper absorbs it nicely and is acceptable to the recycling team. (They don't allow plastic sacks as liners)

I also use newspaper under the cats' litter tray.
Those who vote Labour will be pleased to know it's the Daily Mail. I expect you're thinking the bin and the litter tray are all it's fit for! :)

We use giant plastic wheelie bin sacks for the landfill bin.
All our bins are rinsed out after emptying, and I feel very smug about their cleanliness. Can't bear smells, especially in the hot weather.