Nibor D Insecticide Foam Plus IGR is safe once dry. Vacate rooms prior to treatment. If application is a surface spray, spot or crack and crevice application, re-entry may occur once the spray has dried
Nibor D Insecticide Foam Plus IGR per the label, the IGR portion of the product does have residual efficacy and will prevent nymphal cockroaches from developing into reproductive adults up to 6 months, unless it is sprayed in a drain that water can wash it away. If sprayed in drains that water is run through, reapply as necessary.