not one to promote many products but I have tried everything to get the mildew from my white vinyl. without success ..
but this stuff RMR -86 instant mold and mildew remover is the real deal
removed them effortlessly spayed some in the bilge area and anchor locker same results 99% gone 16 bucks for 32 oz not friendly to colored pants ... didn't smell harsh fumes if its bleach its super bleach
https://www.amazon.com/s?k=RMR-86+In...ref=nb_sb_noss