This is one of our most exciting recent additions!  This cleaner has proven to be very effective in the field for removing silicon, PAINT, deck sealant overspray, sticker residue, markers, any type of oily residue, and many others.  This is a citrus based cleaner and has a very pleasant orange smell.  We always let customers test products before we bring them to market.  Window cleaners just like you have told us that this is a great chemical! Excellent for use on all types of different surfaces also.