Fungicide application frequency

[Forsoothe!]

As far as label recommendations....
I see many labels give you a specific concentration to use based on a square footage of area....anyone know what the hell I'm saying?

Because of that, I usually just wing it.

Yes, it's as though they don't want to make it easy enough for non-certified people to use. Read the label before you buy something. If it doesn't give you a grams or tsp/tbsp per gal, don't buy it. 1 gram = approx 1 cc; Tsp=4.9g; Tbsp=14.8g; cup=236.6g; oz=28.35; qt=946; lb=454g. Buy a big syringe and you're good to go. Rinse the syringe with clear water every time you put it away.