enclosed trailer cleaning ?'s

[mxpimp2000]

I recently bought a white enclosed trailer and its covered in black streaks and acid rain water spots. I have looked into black streak removers from $50 per gallon and that is pretty expensive but thinking its my only option. I do not want a spray on wipe off because the trailer is so large it would take 2 days to hand clean this thing.

Looking for ideas on how you keep your white trailers clean.

[CJM]

Ajax, comet or similar. Seriously it works. Mix it up in a bucket with water (wear gloves of some kind it will dry out your hands bad.

Might need to hand wash it or perhaps you could spray it on with a bottle and use some kinda brush. But it will remove all that junk and dont cost 50 bucks either.