There is no need to stain or oil your MinifarmBox™. It will last up to 10-15 years in its current state. If you like the look of an oiled finish, we reccommend Tung oil which is 100% non toxic and food safe. You can buy it here http://www.realmilkpaint.com/oil.html. Do not use boiled linseed oil or other thinner-based products, as they contains cobalt and Manganese. These ‘drying agents’ are toxic heavy metals which can leech into your soil. The same goes for polyurethane stains and sealers.