Monsanto Company Roundup Pro Concentrate. The item "Monsanto Company Roundup Pro Concentrate" is in sale since Thursday, December 16, 2021. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Weed & Pest Control\Weed Control\Herbicides & Fungicides". The seller is "tjswholesales" and is located in Bethany, Missouri. This item can be shipped to United States.