Joe from Hazleton writes
Per the chart at the top of page 5 on the Rodeo Herbicide product label, you can use between 2/3 oz and 13 oz per gallon of water depending on the maturity of the target weed. For most weeds you want to get the product directly on the leaf surface as much as possible for the quickest result, however it will depend on the particular type of aquatic weed or grass if more specific treatment steps need to be taken. Please review the product label for specific instructions for your needs.
Answer last updated on: 03/30/2017