One bag of pellets will last for a good 7-10 hours of continuous cooking. And you can get the first pizza done with just 300g of pellets. The pellets are 'food safe' and suitable to use in pellet-fueled Ooni pizza ovens (Ooni Fyra 12 & Ooni 3), as well as other pellet grills and barbecues.
Please note not all Ooni Pizza Ovens are compatible with pellets. Check your oven's information for more details.