If they're out now it can take six months or longer before they get more of either one. I'd recommend grabbing a bag or two of either one when you see them as this stuff flies off the shelves in the spring time and not to be seen again until late summer or late fall.
You might want to mosey over to the Berkeley Botanical Gardens on May 11th as Barry Rice will be speaking there.
http://botanicalgarden.berkeley.edu/program/event_des/Unselt_lecture.html
I would love to hear Mr. Rice speak!
Hey Andrew, you should start giving lectures and become famous!