Banned Toxins
Ideally, pesticides and herbicides should be used up according to label directions unless the product contains a banned ingredient such as Dichlorodiphenyltrichloroethane (DDT) or Chlordane.
Donation
If you no longer need a product, consider donating it to a local garden club. If that is not possible, safely store the product until your regular collection day and place these items in a separate open box a few feet from your garbage.
Contact Extension Services
You may be able to gather more information on how to deal with unwanted pesticides and herbicides by visiting the Ohio State University Extension website.