Really? wow it's quite common here and at the places I went to when I lived in CA. When we had out Whites, a Crested Gecko and a Beared Dragon every place we went to for crickets gave us Monkey Chow for them.
:I have never seen Monkey Chow recommended by credible source, I think the best food to give the crickets is what you are giving them now. MANY herps can learn to be hand fed. I no longer use live crickets (except for occasional environmental enrichment), I use Can-o-Crickets. Just keep them frozen and thaw them before use. Although they have their own smell, it is a lot easier than live.