Emmanuel from Florida writes
It says it has 3 months residual effect - is that only for indoors or will it last that long outdoors as well? So after 24 hours, it is rain proof for 3 months (more or less)?
Yes, Bifen IT is labeled to eliminate carpenter ants. The residual indoors is 90 days and 30 days outdoors. This product can be used as a broadcast across your lawn as well. It is rainproof after 6 hours.
Answer last updated on: 12/16/2016