Farmers know it; country-dwellers know it; heck I bet even pigs know they smell. It's taken Toyota of all companies to do something about it, with 9.5kg bags of odour-destroying "ButaRescue".
Apparently each bag is enough to knock out the smells from 10m3 of manure, and can also break down organic materials contained in the poo, so they compost better. The pigs might not be as happy as a pig-in-shit, but at least the Japanese farmers can live a slightly saner life. [Toyota via Akihabara News]
Image: Juliette Culver