(AP) - The Maine Lottery is urging residents not to get too carried away by the hype surrounding the Powerball jackpot that has topped $1 billion.

Marketing manager Michael Boardman says it's important to stress the importance of playing "responsibly" and not going overboard on ticket purchases.

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He says it only takes one ticket to play, and notes that multiple tickets don't make a huge difference when the odds are 1 in nearly 300 million.

A legislative committee launched an investigation amid concerns that the Maine Lottery is exploiting poor people. A report by the Maine Center for Public Interest Reporting estimated that welfare recipients spent hundreds of millions on lottery tickets between 2010 and 2013.