Go for it! Give 'em a try. The brand is an unknown, however.
In the world of pellets there are two kinds. One is "heating" pellets and they are relatively cheap because they are used to produce heat and heat only. They can be made of anything that will burn and it isn't unusual for them to contain compressed paper, paint, tiny bits of metal fasteners, and lots of other stuff you wouldn't burn to cook over. The other kind are "cooking" pellets and they are made from the manufactuer's careful blend of flavor and aroma producing woods. These are more expensive to make. It is always best to know what you are buying and using in your cooker.
Hub