I think drying aids are like the "two bucket method". You are supposed to use it but do you really need to? I stopped using drying aids with my drying towels a while ago. I found the towels to be less absorbent over time even with dedicated cleaning with micro fiber soaps. I would prefer to just have a drying towel that absords.
My drying process is blower, drying towel. and any residuals drops are hit with a Beadmaker type spray and a regular MF towel.