ERROR SORRY 9/64" INCH BIT NOT 9/16. I WATCHED THE VIDEO 3 TIMES AND MISSED THE ERROR. IT WAS CAUGHT BY A VIEWER! There seems to be some confusion about Milky Spore Dust and since I have used it for over 25 years I thought I might try and explain how it works and how to apply this great product. It is truly one of those products that does what it say it will do. Read the package about what to wear and how to keep the powder off of your skin and clothes. It is one of the safest products available if used correctly and is a natural organic insecticide. You need to wear gloves and wash your hands throughly after applying. Since you don't want it on you and you don't want to breathe the dust you would not try and put this down on a windy day.