Pivot 10 IGR Concentrate should be able to be mixed with non-repellents as long as the insecticide you choose does not prohibit it. on the product label.
Pivot 10 IGR Concentrate is not labeled for mites. NyGuard IGR is labeled for mites in general.
Pivot 10 IGR Concentrate contains pyriproxyfen, which does not have the same volatility or movement that the S-Hydroprene in Gentrol has. This is why we generally prefer Gentrol for an IGR for roach control.