Snackers seeking to avoid putting such chemicals in their bodies have a new option from Crunchies Food Company. Crunchies manufactures a line of healthy snacks that uses a freeze-drying process to maintain taste and nutrition without added preservatives. Freeze-dried snacks do not require additional preservatives because they have had up to 97 percent of their moisture removed, which severely limits bacteria growth and chances of spoiling. Crunchies products have a 24-month shelf life provided that individuals store them in the resealable bag in which they are packaged. Exposure to air can rehydrate the snack food and lead to spoilage.