These are salt shots and you want them. One order charges all your items, your home and gives protection for 6 months. Two orders cover you for a full year.
With a salt shot you will not need a charging box unless you are transferring items or giving new vessels.
These are easy to use. Open the package and let it fall from your hands, NOT the bag! Place the salt into your hands and then allow it to hit the dirt, steps, sidewalk to your home. I do half of mine at the back door and half at the front door but you can place it all in one place.
Once you have it out there you are done. Your items will constantly charge and be fresh for you to use. Also once you place it down it fully protects your home.