In addition to buying pellets, you need to ensure their proper storage. Pellets should be kept in a dry, warm room with minimal air humidity. It is also advisable to exclude exposure to dust. The main enemy of pellets is dampness. When wet, the pellets are hard to ignite and begin to smoke. This may result in a clogged chimney. In this case, the calorific value is sharply reduced.
Also, the storage place should be at a considerable distance from open fires and artificial heaters. This is a fire safety standard.
Pellets can be stored outside, but they must be packed in airtight PVC bags.