Dont forget to rinse the soap off with a hose pipe.custard pie feet said:Take your cover outside and lay it on a sheet or some kind of protection. Get a bucket of hot soapy water and a soft brush and scrub away. The material is durable and it wont come to any harm. I have done mine and it will come up like brand new.
Stand it on it's end to dry and you are finished. All these cleaners leave stains and ring marks.