Larry from Brewster, Ks. writes
Unfortunately, Tempo SC Ultra is not labeled to treat for grain beetles. We would recommend a product like Onslaught Insecticide. Onslaught produces no odor, is easy to use, and can be used both indoors and outdoors, including food handling areas (please read directions carefully when using in sensitive environments). It is micro-encapsulated, meaning that after the product is sprayed, the active ingredient is released slowly over time, producing long-lasting residual control of insect pests.
Answer last updated on: 11/22/2016