Just how do these refrigerator balls work?

Our refrigerator balls use the same technology that supermarkets and grocers use to keep their produce fresh for longer! As fruits and vegetables age, they emit gasses that make them spoil. Retail store owners know that potassium absorbs these gasses, keeping them fresher for much longer. Refrigerator Balls contain the same potassium, causing the same long-lasting effect. Contents include 3 Refrigerator Balls and 3 Freshpacks.