6) You might make the application at the wrong time, in the wrong place, or too often. Many herbicides, for example, will not control weeds that are too large. Pests that are in the soil may require different product placement than pests on leaves. Insecticides and fungicides often indicate a maximum number of applications and minimum interval between applications.

7) You won’t understand the toxicity concerns associated with the product. The label contains a Caution, Warning or Danger signal word, which is based on the acute (single exposure) toxicity of the formulated product. The signal word reflects the most toxic category resulting from dermal, oral, inhalation or eye contact. Caution indicates that the pesticide formulation is slightly toxic by any of these four ways of contact. Warning indicates that at least one of the ways of contact is moderately toxic. Danger indicates that at least one of the ways of contact is highly toxic.   

8) You will not know the required personal protective equipment (PPE). If the label states that certain PPE is required (for example, a particular respirator or glove type), you are breaking the law and putting yourself at risk if you don’t wear the PPE for the specified task. If you are an employer and your employees are applying pesticides as part of their job, you must follow all appropriate laws concerning their use of PPE as well.

9) If you are accidentally exposed to the product, you won’t know what to do and might not have the needed supplies on hand. The First Aid section of the label (found under the heading Statement of Practical Treatment) indicates what to do for different types of exposure. You also need the label readily available so you can answer questions from emergency personnel. Do not wait until you have symptoms if the label indicates that immediate medical attention is required.

10)You won’t understand the possible hazards to people, pets and the environment (air, water, soil or wildlife), and whether the pesticide may pose any fire, explosion or chemical hazards. If any of these hazards exist, they will be clearly indicated in the Precautionary Statements on the label.

11)You will be unaware of other critical information. The label contains a wealth of information, which varies depending on the product. Some examples are: when not to treat (wet surfaces, presence of pollinators); what to avoid (spray drift, surface runoff); and how long to wait (before entering the treated area, planting certain species into treated soil, or harvesting a crop for food or feed).

12)You won’t know how to store and dispose of the product. Pesticide labels will often indicate temperature requirements, security needs and what should not be stored with the product (food, feed, seed, etc.) The Disposal section of the label will often address how to clean an “empty” container, and disposal options for containers, unwanted product and anything contaminated by the pesticide.

“Anyone handling a pesticide can be held liable for any unintended consequences that the pesticide may cause,” says Peterson. “Read the label carefully before you purchase the product and each time you are planning an application. Make sure you are willing and able to follow the entire label, and keep the label readily available at all times.”

If you still have questions after reading the label, call the pesticide manufacturer, your Cooperative Extension Service http://www.csrees.usda.gov/Extension or your State Pesticide Regulatory Agency http://www.aapco.org/officials.html.