This whole product line goes through a fan tip nozzle? Wouldn't AIR-8 be needing to hit soil and not grass? Am I misunderstanding something?
You can apply any of their products through a watering can/hose end sprayer/high volume sprayer, whatever type of equipment that you have. I apply my products via my Chapin 24V sprayer with XRC TeeJet nozzles which have a fine spray pattern, because I'm spraying other contact products like fertilizer, iron, insecticide, PGR, etc. I've used the flood jet nozzles that are on my Agri-Fab sprayer to apply the product as well. It's not so much a function of how the product is applied being applied to achieve results, but rather the rate of the application for the product over the area that you're treating.
It's easier for me to spray with the TeeJets because I know what my rate of application is because they're calibrated to me.
Also, if you apply the product, and it's irrigated, the product is going to be on the leaf surface and washed into the soil, similar to tracking dye, or PreM. Once it's in the soil, it starts working.
That being said, I got some FloraGreene that I'm looking forward to using, and I'll be putting that in my hand watering can.