Mossy windows in horsebox

[Wizpop]

Has anyone had this problem?
The sliding windows in my 3.5 box have got moss in between them. Does anyone have any suggestions how to get rid of it??

 

[Red-1]

I guess I just think it is normal? My car has it too as we don't keep it in a garage.

I had it cleaned by a pro and they got it off, so I presume detergent and elbow grease would do it?

 

[hollyandivy123]

Has anyone had this problem?
The sliding windows in my 3.5 box have got moss in between them. Does anyone have any suggestions how to get rid of it??

Tooth brush and elbow grease

 

[Wizpop]

Tooth brush etc won’t work as it’s between the two pieces of sliding glass.