I have several holes on the upstairs window sill which is very high up, too high to climb since the ground is not level or stable under where I need to get to dust these holes. Since it is outside a window, we are tossing around the thought of cutting a hole in the window and handling the problem from the inside of the house. How long after I dust do I need to wait before I cork the hole(s)? And if I do nothing about this problem, will it just continue season after season? Thank you very much.
As explained in our Carpenter Bee article, letting these bees nest around any home, fence or close to any structure is basically saying you’re okay having them every year because once they start, they’ll never leave. Additionally, the offspring produced by the original nests tend to congregate where they were born. This means it’s highly likely the holes you have now will only increase if left untreated.
So to prevent this from happening, dusting with Drione and capping the holes with Corks is the way to go.
Hand Duster: www.bugspraycart.com/equipment/dusters/crusader
Now if you’re able to reach the holes through from a window, this would be a viable way to treat. Just be sure to let the holes stay open for 24 hours before corking them and you’ll have it done properly.
Lastly, you might want to consider getting a Dustick. This device will let you reach up 20-25 feet no problem to dust with the Drione and if you have holes anywhere else around the home, it would more than pay for itself over time by allowing you to dust without undue risk or hazard.