<<<It seems like they would have a hard time with repeat sales if they ate paint.>>>

I dunno..tehy still sell armorall and that stuff destroys vinyl if you don't use it all the time.

I've had good results with the concentrate. It does have to be buffed in pretty good tho.

 

My problem too. I quit using it. The concentrate is great though if you're doing highway speeds in the rain. No wipers required.