Help, Turntable Belt.... Weird


Okay so I called the distributor of my turntable and I had a slight problem with the belt, so anyway they told me to clean it with Windex? These seems a little off to me but maybe I am wrong, does'nt windex have like Ammonia and or other components that could soften or damage rubber?

Anyway, I will clean and Talc it but what is a correct cleaner for this method?

Also they want kinda a lot of money for a replacement belt from them direct, anybody got good cheap online sources for a new belt?

Thanks
matrix
what weird meant is the Windex suggested, the Turntable is a music Hall, but I hope the same rubber as any? Thanks guys will look into it.
It depends on the composition of the belt. If the manufacturer recommends Windex then use it. I service belt driven mechanisms (not audio) all day long and use Windex or generics to clean belts regularly with no ill effects. BTW speed and timing is extremely critical to the equipment I'm referring to.
A little off-topic, but still a good tip. My TT can sit for weeks without being used. To greatly extend the life of the belt, I slip it off during these periods. It’s a small inconvenience to have to slip it on again when listening, but you’ll get years more use before the belt’s stretched to the point of needing replacement.