mecoprop

All of these mixtures typically contain three active ingredients: 2,4-D, mecoprop and dicamba.

In the herbicide mecoprop, the carboxyl group and the hydrogen atom on the central C-atom are exchanged (with the screen as plane of symmetry).

The United States Environmental Protection Agency has classified mecoprop as toxicity class III - slightly toxic.

Urinary alkalinisation has been used in acute poisonings from chlorophenoxy herbicides (such as 2,4-D, MCPA, 2,4,5-T and mecoprop) however evidence to support its use is poor.

In either case, both weeds are diffcult to control and most of the lawn-care professionals suggest a spray application of a combination of 2,4-D with mecoprop and dicamba and a repeat of this treatment several times a season.