Firm Warns of Product Tampering: Everfresh Inc. of Franklin Park, Ill., said consumers in 18 states, including California, should look for possible tampering of its 10-ounce bottles of Everfresh Grapefruit Juice. It said the bottles involved were from lot No. C1225. Pennsylvania officials and the Food and Drug Administration are investigating several cases of apparent tampering, the company said. Thirty bottles of its grapefruit juice found in the Hatfield and Reading, Pa., areas showed signs of tampering. The company said no serious injuries have been reported.