Kim_Berly, well, the rumpled (i think, this word) packs of, for example, kefir, but drinkable (I mean the date Use Before), are not danderous. But if you buy some products in cans, for example, some fish, be careful: in most cases products in rumpled cans are inedible, 'cause the pressure and sphere inside are already broken, and it's very dangerous for health.