My workplace saves the oil from our fryers. The oil goes into big 55 gal drums and is picked up by a removal company. Just found out today that the removal company uses the oil from all the restraunts in town for pet food... I am so grossed out. All that fat and grease and salt... no wonder there's so many over sized pets around these days. I woudn't feed that used oil to my worst enemy. Ugh. Makes me want to give my dog a steak dinner