PALM DESERT, CALIF. (KESQ)- As temperatures continue to climb into the triple digits, more people are relying on grocery delivery services. How quickly refrigerated and frozen foods can become unsafe in extreme desert temperatures and whether current food safety guidelines change in this kind of heat. Dr. William Woo, the Assistant Chief of family medicine at Kaiser Permanente said "Do not rely on things like smell alone. Your food may smell normal, may look normal, may even taste normal. He also recommends bringing deliveries inside as soon as possible and refreiderating items if you're not eating them right away.