Thomas from Ut writes
I have a guest shower bathroom that is rarely used, and also a few floor drains (laundry room and water closet). These drains are often dry. How often should I apply Nibor D foam IGR to drains?
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.
Answer last updated on: 04/17/2023
