A dissenting vote against Stoner. I do have their interior trim cleaner, but use it VERY carefully (and as a last resort) as it is very strong.
When Stoner products were first being released to the consumer market, they gave away free samples at the big Carlisle, PA swap meets. I tried it on my tires and was amazed at how simple it was to use.
They were marketing these products as what detailers use.
After finding out that all of these vinyl and rubber products are basically, silicone spray, I stopped using them. I know that many folks have no problem using silicone products on their plastic, rubber and vinyl, but I avoid them. Good info here... 303products.com.
If there was nothing else available, I'd use Stoner, but with so many other "safer" products around, like 303 or Sprayway's non-silicone tire shine...I stay away when possible from the Stoner things.