[jdent]

Does anyone know how much 7 Spray should be used per application and how often to apply it. It doesn't say anything about it on the label, just where to apply it.

[rip21]

I believe PA has said once a day is sufficient. As far as sprays go, it's estimated that at about 45 sprays/day the bottle will last around 1 month, but PA doesn't give any recommendations for how much to spray or how long a bottle should last. At this point it's trial and error to see what an effective dose is.