Great question Dave, I wonder the same thing. Both the HSB and the Northern feed trained LMB are both very aggressive when feeding on the Purina LMB feed. If I downsize the feed then I can see that's twice as much energy spent on explosive attack of the feed.
Frank, you are asking the same the way I read your post. How much are they asking for the bigmouth feeder? Today and this past couple of weeks I have slowed down my hand feeding the Purina lmb feeding to twice per week. Mostly because its been cold and wet for me to go and do it.
