How can you get rid of this

[Martin59]

when I brought my motorhome it had this in the photo, I’ve just had habitation check done no damp at all, he said just where you breathe at night, but it’s a bit unsightly, tried bleach any suggestions grateful received.
Martin

 

[Podney]

Is it plastic? Is it hard or spongy? Have you tried vinegar and lemon juice and rubbing gently with a nail brush?

 

[gpat]

You can get mould remover from b&q or similar. However it may be that the surface is physically damaged.

 

[Podney]

Yes,Dettol mould remover is quite good,but it depends how long the mould has been there. Often still leaves some staining.

 

[the1andonly]

If it a natural based product eg cotton beware when uzing bleach based product, especially in confined spaces, they also need water rinsing.
In the pazt we have had great success with oil of cloves