Here is the recipe for Garrett Juice from his organic guide page:
http://www.dirtdoctor.com/organic/garden/view_question/id/2210/ Garrett Juice (ready to spray):
1 cup compost tea
1 ounce molasses
1 ounce natural apple cider vinegar
1 ounce liquid seaweed
For Garrett Juice Plus and more fertilizer value add:
1- 2 ounces of liquid fish (fish hydrolysate) per gallon of spray.
For disease and insect control add:
¼ cup garlic tea or
¼ cup garlic/pepper tea
or 1 - 2 ounce of orange oil
For homemade fire ant killer add: 2 ounces of orange oil per gallon of Garrett Juice
Here's the Products and Places page
http://www.dirtdoctor.com/organic/garden/advance_business_listings/ for finding businesses in your area. It looks like in Frisco you have
Cristina's Stone and Garden Center
14440 Preston Road
Frisco, TX 75034
214-705-9660
Pardner's
8960 Alpha
Frisco, TX 75034
972-377 2165
Shades of Green
8801 Coit Road
Frisco, TX 75035
972-335-9095