Concrobium Mold Control Pro, Gallon, 625001 (3 Gallons)

Can this be used with a forger to treat inside hvac ducts?

is this a concentrate that needs to be diluted

Is this the same as the kind you can buy at the store, or is it more powerful?

I’m removing some mold from basement. can i paint over this? or should i paint before i use it? thanks.