The Bonide Colorado Potato Beetle Concentrate is not labeled to control blister beetles. However we do carry a product for blister beetles called Sevin Concentrate. You will need to mix 1.5 - 3.0 fl oz of Sevin per gallon of water for most applications. You can see the Sevin product label for complete usage instructions by clicking on this link: PRODUCT LABEL. Product labels are also available on individual product pages on our website in the product description box.