The CDC reports it's important to avoid "unnecessary use of antibiotics" in agriculture to slow antibiotic resistance that can result in "superbugs" in humans. While some fast-food establishments have eliminated antibiotics entirely, 'Eat This, Not That!' reports that these 5 restaurants continue to use the meat of antibiotic-treated animals. 1. Five Guys: In 2018, the burger chain received an "F" in Consumer Reports' annual Chain Reaction report regarding its antibiotics policies. 2. Dairy Queen: While the restaurant limits antibiotics in its chicken supply, it does not publicly hold beef or pork to the same standards. 3. Taco Bell: With similar policies as Dairy Queen, Taco Bell received a "D" in the 2021 Chain Reaction report. 4. Burger King: Like the two named before it, Burger King has minimal antibiotics policies when it comes to chicken, but not beef or pork. 5. Domino's: The world's largest pizza chain also follows suit with its chicken vs. beef and pork policies. However, the chain announced its intention to switch to antibiotic-free beef and pork eventually, but it hasn't given a more specific time frame.