Central Illinois farmer Dan Aeschleman recently converted his land to a more lucrative use: attracting foxes and then selling their urine in pump-spray containers ($11.95 for 16 oz.) to landowners to keep nuisance animals away with the "presence" of a predator.

According to a September report in The Pantagraph newspaper of Bloomington, Ill., Aeschleman says the tricky part -- getting the non-domestic foxes to urinate in an orderly fashion and then collecting it all (10,000 gallons a year) -- is a "trade secret."