Ontario Pesticide Exam overview

Ontario Pesticide Exam: Pesticide classes and the law

What counts as a pesticide, federal product classes, Ontario Classes A to E, banned pesticides, using products only as labelled and the cosmetic pesticide ban.

  • 13 questions
  • Topic drill
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Pesticide classes and the law · Question 1Score 0/0

Which federal product class is meant mainly for the public's use in and around their homes?

Study reference: Ontario Pesticides Act, O. Reg. 63/09, OPT&C and Health Canada (Oct 2026), Ch. 2 Pesticide classes and the law — Pesticides Act; Pest Control Products Regulations s. 5; O. Reg. 63/09 ss. 2, 9, 11, 22, 30; ontario.ca Classification of pesticides

All 13 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

  1. Which federal product class is meant mainly for the public's use in and around their homes?

    1. Manufacturing
    2. Domestic
    3. Restricted
    4. Commercial
  2. Why is a pest control product given the RESTRICTED class?

    1. It contains only natural, plant-based active ingredients
    2. It is used only to manufacture other products
    3. Health or environmental risks led to extra label limits
    4. It is sold only in hardware and garden stores
  3. A product is registered federally in the Commercial class. What is its Ontario class?

    1. Class A
    2. Class D
    3. Class C
    4. Class B
  4. How does a newly registered federal product get its Ontario class?

    1. The maker applies to MECP and waits for review
    2. A licensed vendor assigns the class at the time of sale
    3. It is classed automatically from its federal designation
    4. OPT&C assigns the class when the product is used
  5. A customer finds an old can of chlordane in a garage. What does the regulation allow?

    1. Only managing it as hazardous waste
    2. Selling it back to a licensed vendor
    3. Using it once, then rinsing the container
    4. Using it up indoors where it is safe
  6. Who may use Class C pesticides?

    1. Only manufacturers making other pest control products
    2. Anyone over 18 who buys them from a licensed vendor
    3. Only government staff working on public property
    4. Trained people such as licensed exterminators
  7. What is the purpose of Ontario's cosmetic pesticide ban?

    1. To ban all pesticide use of any kind within city limits
    2. To allow only low-risk pesticides for cosmetic lawn use
    3. To ban pesticide use inside homes and offices
    4. To ban Domestic products from being sold
  8. Before a pesticide can be sold or used in Ontario, under which law must it be registered?

    1. The federal Food and Drugs Act
    2. Ontario's Occupational Health and Safety Act
    3. The federal Pest Control Products Act
    4. Ontario's Environmental Protection Act
  9. When may an unlisted pesticide be used on land around a house to control carpenter ants?

    1. Only in spring before ants become active
    2. Whenever the homeowner sees ants on the patio
    3. Only if the product is a Domestic-class spray from a store
    4. Only to prevent structural damage that risks safety
  10. What is a Class E pesticide in Ontario?

    1. Any pesticide imported into Ontario for personal use only
    2. Corn or soybean seed treated with certain neonicotinoids
    3. Any fumigant gas used in grain storage
    4. Any product used to control aquatic weeds
  11. Under the cosmetic ban, when may an unlisted pesticide be used on land around a building?

    1. When the use is integral to a structural extermination
    2. When the pest is visible from the street
    3. When the homeowner signs a written consent form
    4. When it is applied before 7 a.m.
  12. Under Ontario's Pesticides Act, which of these is a pesticide?

    1. A cleaning product used to wash floors
    2. A fertilizer used only to feed lawns
    3. A ladder used to reach a wasp nest
    4. A product used to attract or repel pests
  13. According to O. Reg. 63/09, how must every pesticide be used?

    1. However the supervising technician recommends
    2. At double the label rate for heavy infestations
    3. As the client asks, if the client signs a waiver
    4. In accordance with its label and the regulation

Pesticide classes and the law: key rules to remember

Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗

What is a pesticide

  • A pesticide is any organism, substance or thing used to directly or indirectly control, prevent, destroy, mitigate, attract or repel a pest, or to alter the growth of non-pest plants, including anything registered under the federal Pest Control Products Act.

Federal product classes

  • DOMESTIC: sold mainly to the public for personal use in and around homes.
  • COMMERCIAL: for commercial activities specified on the label.
  • RESTRICTED: the federal minister has added label conditions on display, distribution, use limits or user qualifications because of health or environmental risk.
  • MANUFACTURING: used only to make other pest control products (or fertilizer or feed products).

O. Reg. 63/09, s. 2 and ontario.ca Classification of pesticides (updated 2026-05-05)

  • Ontario classes follow the federal designation automatically; no Ontario application is needed.
  • Class A = federal Manufacturing; Class B = Restricted; Class C = Commercial; Class D = Domestic (or registered under the Fertilizers Act).
  • Class E = corn or soybean seed treated with the neonicotinoids imidacloprid, clothianidin or thiamethoxam.
  • Class C pesticides can only be used by trained persons such as licensed exterminators, certified farmers and permit holders.

General prohibitions

  • No one may use a pesticide unless it is classified as Class A, B, C or D (or an approved imported equivalent).
  • Every pesticide must be used in accordance with its label and the regulation.
  • Aldrin, chlordane, chlordecone, DDT, dieldrin and endrin may not be used, stored, sold or transported; they may only be managed as hazardous waste.
  • Some products, such as purely mechanical devices and certain disinfectants labelled only for micro-organisms, are outside the Act.

Cosmetic pesticide ban

  • Ontario bans the cosmetic (non-essential) use of pesticides on lawns and gardens, except for low-risk active ingredients on the Allowable List or uses covered by an exception.
  • The Allowable List is updated periodically (Version 5 took effect November 28, 2022).
  • One exception: a pesticide use on land is allowed when it is integral to a structural extermination.
  • Unlisted pesticides may be used on land around a building to control pests such as carpenter ants and termites only to prevent structural damage that would put someone's health or safety at risk.

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