If you are using 41% Glyphosate, you need 6.24 ounces per 1 gal. to get a 2% concentration

Gmil6184, If you can not find 41% Gly at your local co-op or feed store for less than $41.95 per gal. or $86.95 for 2.5 gallons, here is a site http://www.keystonepestsolutions.com/index.php?main_page=index&cPath=9