I was just taking the rubbish out and realised I might have an unfucking tip to share. We used to have a real problem with bin bags leaking into the bin itself, which really made it smell and meant we had to scrub it out practically every time it was emptied. To solve this we started putting biodegradable kitty litter into the bottom of the bin. Now if the bin bag does leak the kitty litter absorbs it as well as cancelling out any bad smells. When we change the bin we just change the litter too.