(AP) - Officials in Pittsburgh have no beef with the music performed by Luke Bryan and Kenny Chesney. But they do have an issue with the performance of fans who have come to see the two country acts perform.

Authorities are trying to come up with policies to avoid the huge cleanup that followed both shows.

One idea is to limit the number of hours people can tailgate at venues like Heinz Field, where the two shows took place. Another idea being considered is to have promoters pay a deposit that could be used to defray cleanup expenses. Officials hope to have the new rules ready before Jason Aldean's July 26 concert at PNC Park.

After last month's Bryan concert, Mayor Bill Peduto criticized fans for "trashing" the city.