I've used this pre emergent for over 30 years and it is very effective for mostly grassy weeds and some broadleafs. Unfortunately DMOPC has been out of stock on gallons for some time and they don't list quarts at all. I bought a pint to get me by but the price is double per ounce.
Expert response: Thank you for your comments! We do have the same formulation available from other manufacturers with 40.4% Oryzalin. Surflan Pro Herbicide is available in pints and quarts here: http://www.domyownpestcontrol.com/surflan-pro-herbicide-oryzalin-404-p-1819.html. Surflan is also available in a 2.5 gallon container for larger applications: http://www.domyownpestcontrol.com/surflan-as-herbicide-p-1555.html.
You may also call us for product availability at 866-581-7378 M-F 9a-5p EST.