Mint Extract: If you favor neither the smell of citrus nor vanilla, you can perhaps use mint extract instead. Pour several drops of mint extract on a couple of cotton wools. Toss the cotton wools inside the confined space and leave them for a couple of days.
Overall, these bins are not as attractive and therefore not as commonly placed in public areas, though it is possible to purchase specialized lids for more controlled trash disposal. This type of outdoor trash receptacle is often ideal for employee usage and for housing waste that has been emptied from inside.