Per the manufactures product label instructions: To ensure optimal herbicidal response, water treated areas within 21 days of applying Crew Specialty Herbicide if rainfall is not expected. A single rainfall or sprinkler irrigation of 0.5 inch is often required to activate this product.
As long as you keep pets/children out of the area while you treat and until Crew Specialty Herbicide application has had time to completely dry or settle it is safe for pets and people to return and resume normal activity. Typically after 4-6 hours.
Please view the product label for more information.
Unfortunately, we do not have the spreader settings for Crew Specialty Herbicide. Due to the thousands of granules on the market and just as many different types of spreaders, you will want to calibrate your spreader to the product you are using and its application rates.
Take a moment to view our How to Calibrate your Spreader Video for a demonstration showing how to do this.
Crew Specialty Herbicide is applied at 150lbs per acre (3.44 lb/1000 sq ft) in landscape ornamental applications with a maximum of 2 applications per year.
If your spreader model & settings are not provided on the product label by the manufacturer, then you will need to manually calibrate your spreader to the product you are using and its application rates. Take a moment to view a short video on the steps on How to Calibrate Your Spreader.
Due to the thousands of granules on the market and just as many different types of spreaders, there isn't a master list that exists. You can also try calling the manufacturer of your spreader or the chemical itself directly, to see if anyone on their staff has that info.