Got to be careful regardless of what brand you use. Wax products accumulate in rubber and plastic, particularly grained materials, even some of the newer products that state they are rubber trim safe will tend to attract dust, dirt, more wax and detailers which bond to this residue and soon the plastic turns white or chalky.
I take a couple minutes and painters tape the stuff I don't want wax on, this probably comes from my body shop background where you tape everything you don't want overspray or compound on and wax is the same. Only takes a couple minutes and to me results are worth it.