On this issue, it is better to say it directly, because the school canteen earns money from students. As long as the price is right, it is estimated that everyone who sees the slogan will come. You can do this: the canteen of XX school is rented, provided that the hygiene is up to standard and the food is safe. Interested parties please contact XXX as soon as possible. After studying for so many years, the canteen in high school is the worst, and there are bugs in the dishes. Considering the interests of students, hygiene and food quality are the most important. A little suggestion.