Pumpin' Pal Foamin' Flange Wash is specifically formulated to clean oily residue from your Pumpin' Pal Flanges that other cleaners leave behind. Highly-recommended for the Silicone Flanges in particular. Simply wet the flange with warm water, apply one to two foamy pumps of wash onto the flange and rub.
Rinse very well with hot water, and your flanges are like new again!