Glyphosate 4 + Plus Herbicide Replaces Roundup - Generic 41% with Surfactant - 5 Gallon Credit 41 Extra Glyhosate 41% Glyphosate Plus 41% Glyphosate may be used in any area of vegetation. Care should be taken to ensure that non-target vegetation is protected from drift. For general application mix Glyphosate 4+ at a rate of 2 ounces per gallon of water and treat unwanted vegetation.