These are inexpensive enough, where you can buy one to try and add more as needed. I use these in dry hopping and in the boil. Each one holds 1 ounce of pellets. Makes clean up a breeze, plus less trub. I own three currently and have used 2 at one time for dry hopping, connected to fishing line, in my corny keg. When I was done I just pull them out and throw my keg in the fridge.