It is safe to return to an area treated with Adonis 75 WSP once it is dry, typically after a few hours.
Each 2.25 oz. packet of Adonis 75 WSP should be mixed with 25 gallons of water. You will use 1.6 oz. per 24-48 inches of cumulative shrub height. Apply the product around the base of the tree, directed to the root zone.
Per the product label for Adonis 75 WSP, "For optimum control, irrigate thoroughly to incorporate this product into the upper soil profile, at least 1/4 inch".
Adonis 75 WSP is not technically labeled for use on potted plants so we aren't exactly sure what usage rate to recommend. You can contact Central Life Sciences, the Adonis 75 WSP manufacturer, to see if they are able to give you instructions for use on potted plants. You can reach Central Life Sciences by calling (847) 330-5300.