Place chamoy in a shallow bowl and chile lime salt in a separate shallow bowl or plate. Dip the rim of each jarrito in chamoy then in chile lime salt.  Set aside.

Combine orange, grapefruit and lime juice in a small pitcher; stir to mix well.

Add a few ice cubes to jarritos.  Fill halfway with citrus juice mixture, 1 ounce tequila each and top with 1/2 cup grapefruit soda; stir to mix well. Garnish with slices of citrus fruit. Serve and enjoy!