If your still thinking that products like those are used inside the culture rather than outside, then no, those chemicals will hurt the frogs.
These chemicals are used to line the surface that the cultures are sitting on. They are like a moat around a castle, they keep mites from getting inside the culture. That's one way that they can get in. The other way is by hitching a ride on flies used to start the culture. Thus the reasoning behind destroying cultures that are 30 days old, because that's how long it takes a few mites to breed to large numbers.
These chemicals are used to line the surface that the cultures are sitting on. They are like a moat around a castle, they keep mites from getting inside the culture. That's one way that they can get in. The other way is by hitching a ride on flies used to start the culture. Thus the reasoning behind destroying cultures that are 30 days old, because that's how long it takes a few mites to breed to large numbers.