Wilhelm E Kaosse wrote: Dear Wil: You want to use the USP type mineral oil (used as a laxative). However, you should be able to find stores in the US that charge around US$2.00 for a pint. Do you have Drug Emporium, SuperKmart, Pharmor, Revco type stores in your area? Those would carry medicinal type mineral oil (their brand is equal in quality to USP mineral and acceptable. Good luck. Best regards. Dr. Rodriguez Virginia Beach, VA