What is MicoGreen's claims on filter efficiency?
I'd like an air filter to get smaller stuff out, sure.
Of course air filters get better with the "cake" build-up of dust on the dirty-air side.
I'd need some reassurance smaller junk was ACTUALLY being removed before buying.
Edit: Just checked their website and about all their claims are for extra endurance dirt holding capacity. I guess nice. Would need a "filter minder" differential pressure sensor to determine when the pressure drop across the filter got too high, time to change.