RSF PreSpray Spiked with GroutMaster - 36 lb PailMost carpet presprays can clean nylon but fail miserably when it comes to oil loving olefin and polyester fibers. Therefore we set out to make what most said cant be done, make a prespray that can clean both nylon and polyester carpets in a powder form. We worked day and night for a year and finally did it. View SDS information here View Ingredients here I can honestly say, in my 35 years of cleaning, I have never had a product that was so versatile