Name:   Lifer - Subject:   Pontoon boat storage Date:   10/23/2014 12:19:32 PM (updated 10/23/2014 12:26:47 PM)

I will say again also, that it is nothing more than a cleaner using sodium hypochlorite (BLEACH) as the active ingredient.  Mary Kate does add something to make it more viscous to help with clinging to vertical surfaces.  ALL mold/mildew cleaners, that work well anyway, are nothing more than dilute bleach water.  If I could cut and paste I would include a link to where I researched specifically for Mary Kate because I haven't checked the brand before. 

The website Practical sailor has a good article where they compared 14 different brands of mold/mildew cleaners both with and without sodium hypochlorite.  Save your money and mix a little Dawn for degreasing and bleach for mold/mildew.  Cost will be pennies compared to Mary Kate at $17++ quart on Amazon.

Apply diluted bleach.  Wash with any good soap.  Rinse.  Wash again.  Rinse. Rinse. Apply 303 Areospace Protectorant.  Reaaply 303 monthly.  TIP-before using any bleach product saturate the carpet with water to reduce the risk of accidental discoloration from drips or spills.

FYI- the cleaner that tested best has sodium hypochlorite at concdntrations 19 times greater than houehold bleach.

And now will come the stories of how it will destroy the stiching.  I call bovine excrement!!  When you wash a load of whites with bleach do they disentegrate? No, mainly due to proper rinsing.  If you are having to deal with mold/mildew more than once a year your problem is improper storage conditions.