Rebecca from Tucson, Az writes
We had a black widow inside our fireplace in the family room. We were able to kill it but are now worried that it laid eggs inside the fireplace. Can we place delta dust inside the fireplace? Is delta dust effective for black widow egg sacks?
You cannot use insecticides, including the Delta Dust Insecticide, inside your fireplace. Instead, we suggest lighting a fire for a brief time to kill any remaining spiders or eggs.
Answer last updated on: 05/28/2023
