Company is called Emerald Triangle.
They make a number of things including the Humboldt County's Own line of products:
Bushmaster
Gravity
Snow Storm Ultra
Purple Maxx
The consensus on these products is that they are highly concentrated, or rather, the affect they have on a plant demands that the grower also apply a lower EC solution and lower intensity lighting to prevent the leaves from burning when utilizing these supplements. Using the products in extremely low volumes like 0.25ml to 0.5ml per gallon has been shown to be the best method when using them for any duration of time longer than a few feedings.
All of these products can be utilized in foliar solutions and are much more economical when applied in this fashion. Emerald Triangle released this document a few years ago to help growers utilize Bushmaster to the best of their potential.
http://www.bghydro.com/mmbgh/Others/Bush Master Instructions.pdf
I've used Gravity before several times. What it seems to do for me is stimulate the production of flowers. I like to use it as the swelling period is just starting to wane as a way of kicking the plants back into high gear for another week. The result is flowers stacked on flowers, flowers in flowers, in flowers. Dense too. I use the product in back to back feedings at the rate of about .5ml per gallon.
This grow I will be utilizing both Snow Storm and Gravity both in the reservoir and as foliar feeds. If it works, then great. If not... Then it really only cost me like $10 to try out because I'll need to toss my bottle of Gravity after this grow as it will expire shortly afterwards.
From what I hear, Bushmaster does what it claims it does, and the warnings about "less is more" are probably totally true. Take a look at the document and include some sea kelp extracts in your foliar feeds during the first two weeks of flowering to keep those girls from stretching away on you.