My all time most useful tool is the compact Bellows Hand Duster, I still believe I could solve most issues with this handy tool. The next best tool in my opinion could be the Insider (see below).

Not everyone within the Pest Industry has any idea of these but I keep them on hand for those hard to reach jobs or places where I like to dust from time to time.

Remember it’s not just killing the bugs, who have to use tools which work the best for the customer.