I've used all kinds of things for the smelly box and finally got rid of it - not sure which one worked - but here's my list - a bag of cheap coffee from the $ tree, opened just a bit - sunlight - Febreeze - fabric softener sheets - Stinkies from Walmart - vanilla in a coffee cup - newspapers - opened bar of cheap soap, and some others I've forgotten about. Took a few weeks of back & forth.