CHICAGO (CBS) — When fans and players return from the All-Star break, they will be banned from using chewing tobacco in Chicago under a city ordinance that takes effect this week.

Under the new law, the use of chewing tobacco or other smokeless products would become illegal during home games played at Wrigley Field and U.S. Cellular Field as well as other sporting venues citywide.

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The city council passed the ban in March, and the law officially goes into effect Tuesday.

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Chicago joins Los Angeles, San Francisco and Boston in outlawing smokeless tobacco use at all ballparks and sporting venues.

Ballparks and sporting arenas are required to post signs in all dugouts, bullpens, training and locker rooms, press boxes, television and radio broadcast booths and bathrooms.

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Violators face fines from $250 for the first offense to $2,500 for repeat violations.