How do I clean my Sea Doo Covers

[luckyzl230]

I have a 2004 GTX and a 2012 GTI.
I always store them in the garage but for this winter season I had home improvement projects going on so I had to store them outside.

Well, the result was dark black stains on the outside of the covers (looks like where water has dripped off the covers)
Then on the inside it looks like mold or mildew. Of course I was pissed until I was able to just wipe off my seats with a towel and hot water.
But, then comes the question of do I want to risk putting my covers back on and transferring that stuff back to my seats.
Not to mention all the nats that are attracted to the covers. Must have been 100 to 200 of them loving to stay attached to my covers even when I shook them off the covers.
One cover is 2 years old and the other one is 5 years old. They both cost $250 each and both are Sea Doo Brands.

Is there a good way of cleaning my covers to get the stains off the outside and get the mold/mildew off the inside?
I'm trying to save $500 from buying new ones so any suggestions would really be appreciated.

Thank you

[dsteinmann]

I occasionally put in mine the washer about once or twice a year, and let it air dry

[sea-one]

Use Marine mold and mildew remover, make certain its MARINE all others will bleach it. Just spray and let dry.

[luckyzl230]

Use Marine mold and mildew remover, make certain its MARINE all others will bleach it. Just spray and let dry.

Didn't see that last till just now.
I put 2004 in the washer and used a little Clorox bleach with some gain detergent.
I had found some other posts about putting it in the washer machine as long as it doesn't have an agitator.
I let it air dry.......
I think the mold is gone......But..... still has all the stains on the out side and from where the mold/mildew was on the inside

Not sure where to get Marine mold and mildew remover from? Walmart?
Will that remove all the stains?

[Premix]

I'd like to reapply waterproofing to my winter cover, but am wondering if certain types of waterproofing spray can dirty the gel coat or other parts of the Sea-Doo.

[Guidoo]

A chlorinated swimming pool works,but slowly. I soaked a cover in our pool for a week. Actually worked. Lol