Saturate contaminated, unwetted clothing with Tecnu in a bucket or dishpan (First check for color fastness by testing a concealed corner of the fabric). Let soak for several minutes. Launder clothing by itself as usual with detergent and hot water.

Another option is to wash the clothing with a laundry detergent which removes oil or grease.  We recommend running it thru the laundry cycle twice when using this method.