How you can win free guacamole for a year at Chipotle

• Chipotle has launched its 'AvoLotto Sweepstakes', offering customers the chance to win a year's supply of free guacamole.
• To enter, participants must use an interactive 'AvoLotto Lens' on Snapchat to scan a real avocado.
• The sweepstakes runs until July 30, with up to 1,000 winners selected daily, who receive 52 free guacamole codes redeemable via the Chipotle app.
• The promotion celebrates National Avocado Day on July 31, when Chipotle Rewards members can also get a free guacamole side or topping with any regular-priced entrée.
• This initiative is part of Chipotle's 'Summer of Extras' loyalty program, which has also featured a Lipotle lip stain and BOGO meals for tattooed customers.

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Chipotle is giving away one year of guac: How to score yours