Quoted from jvivlemore:NOVUS 2 - I've read a lot of caution on using this since it's abrasive... It's not a wax so what the heck is it actually doing?
It's for deep cleaning places like you are showing, area with ground in dirt trails.
It is abrasive, so if you used it everyday it might be bad for the PF but its nothing to worry aboot. If you can get those trails out with just naphtha, then you won't need novus. It's lighter fluid, don't let yiur kids drink it and they'll be fine
I personally would never put glass cleaner on a PF.