The present invention generally relates to an aqueous herbicidal formulation that comprises at least one phenoxy acid herbicide or an agriculturally acceptable salt or derivative thereof, and an alkylamidopropyl dialkylamine surfactant adjuvant, wherein said surfactant adjuvant comprises at least one surfactant having the formula (I) wherein R is a straight or branched chain, saturated or unsaturated acyl group having 6-22 carbon atoms, n is 3, and Y and Y' are, independently, an alkyl group having 1-4 carbon atoms or (AO)H, wherein AO is an alkyleneoxy group having 24 carbon atoms, and s is on average 1-10; provided that at least one of the groups Y and Y' is an alkyl group having 1-4 carbon atoms; or a salt thereof; or a quaternised derivative of (I) having the formula (II) wherein R is a straight or branched chain, saturated or unsaturated acyl group having from 6 to 22 carbon atoms; n is 3; Y and Y' are, independently, an alkyl group having 1-4 carbon atoms or (AO)H, wherein AO is an alkyleneoxy group having 2-4 carbon atoms, and s is on average 1-10; provided that at least one of the groups Y and Y' is an alkyl group having 1-4 carbon atoms; R2 is a C1-C4 alkyl group; and X" is an anion. The invention also relates to a method for combating unwanted vegetation which comprises applying to said unwanted vegetation an effective amount of the aforementioned herbicidal formulation., (I)(II)Водная гербицидная композиция, содержащая по крайней мере одну гербицидную феноксикислоту, ее сельскохозяйственно приемлемую соль или производное и поверхностно-активный адъювант, где указанный поверхностно-активный адъювант включает в себя по крайней мере один поверхностно-активный алкиламидопропилдиалкиламин формулы (I) или четвертичное производное соединения (II) формулы, а также способ получения композиции и способ контроля нежелательной растительности.Водна гербіцидна композиція, що містить щонайменше одну гербіцидну феноксикислоту, її сільськогосподарсько прийнятну сіль або п