Q. Safflower helps deter or at least slow down seed consumption by gray and red squirrels. But will chipmunks eat the safflower seed?
A. In a word - YES.
Unfortunately these little critters will eat safflower seed, as well as sunflower seed, peanuts, tree nuts, and suet, in other words, just about any seed you typically put in a regular feeder. I have noticed that they're a little slower eating millet - unfortunately, millet is not a favorite of many birds and it also draws in House Sparrows.