I had to buy a ginormous bag to get this premium small bark and have too much. Many professional orchid growers use this 100% fir bark, which been machine dried to completely destroy fungi, bacteria, insects and snails.
This is superior to bark which has not been machine dried and way better than the large chunky stuff you'll find in most stores, which is usually mixed with perlite.
Bring your own container or I can use clean plastic milk jugs I've washed and saved for this purpose.