Best? I don’t know about that. I use an RCA/discwasher dry laser lens cleaner. Seems to do the job okay (has tiny brushes on one side). Amazon has something like it (if not identical). The price, however, seems way higher than what I spent for it at an audio shop several years ago.
https://www.amazon.com/DISCWASHER-RD-1141-Laser-Lens-Cleaner/dp/B0002ZHG0K
https://www.amazon.com/DISCWASHER-RD-1141-Laser-Lens-Cleaner/dp/B0002ZHG0K