Yes It is generally safe to store wood pellets inside your house. You can store them in a basement, garage, or storage room, as long as they are not exposed to extreme temperatures or humidity. Wood pellets are combustible and can catch fire if they come into touch with heat or flames, they should be stored away from any open flames or potential ignition sources If you have pets or small children, make sure wood pellets are out of their reach. Overall, as long as you take proper precautions and follow storage guidelines, storing wood pellets inside your house can be a safe and convenient option.