If it has been raining how do I know the concrete is dry enough to treat?

Providing the surface is visually dry, ie no visual damp spots, Radcon may be applied. If Radcon is applied to wet concrete or concrete with damp spots, then Radcon will not be absorbed in through capillary action.

This means that any damp spots treated with Radcon would simply see the product "not absorb" and wash away during the first watering procedure.

Radcon Formula #7®
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