Pesticide Formulations and Mold Remediation
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Questions and Answers

What is the term used for the mixture of acute and inert ingredients in a pesticide?

Formulation

Which of the following are advantages of using emulsifiable concentrates (EC)? (Select all that apply)

  • Leave little visible residue on treated surfaces (correct)
  • Easy to handle, transport, store, pour, and measure (correct)
  • Strong odor
  • Easily absorbed through skin
  • Little agitation required (correct)
  • Corrosive to application equipment
  • May damage treated surfaces

Which of the following are advantages of using wettable powders (WP)? (Select all that apply)

  • Abrasive to pumps and nozzles
  • Inhalation hazard
  • Easy to store, transport, handle (correct)
  • Less likely to harm treated plants, animals, and surfaces (correct)
  • Must be weighed
  • Easy to mix
  • Not phytotoxic (correct)

Which of the following are advantages of using flowables (F or AF)? (Select all that apply)

<p>Splashes are less likely than with other liquid formulations (B), Low exposure risk (F), Not phytotoxic (G), Seldom clog nozzles (H)</p> Signup and view all the answers

Which of the following are advantages of using ready-to-use or predicted sprays? (Select all that apply)

<p>Less personal exposure risk (B), Some are packaged and sold in or with an application device (D), Neither measuring nor mixing is required (E)</p> Signup and view all the answers

Which of the following are advantages of using pastes, gels, and other injectable baits? (Select all that apply)

<p>Low human toxicity (B), Very accurate placement and dosage (C), Odorless (E), Low applicator exposure risk (F), Minimize human and pet exposure (G), Lasts for a long period (H)</p> Signup and view all the answers

Which of the following are advantages of using dusts? (Select all that apply)

<p>Usually ready-to-use (A), Good alternative where moisture from a spray might cause damage (C), Applied with simple application equipment (D)</p> Signup and view all the answers

Which of the following are advantages of using solid baits? (Select all that apply)

<p>Ready-to-use (A), Control pests that move in and out of an area (F)</p> Signup and view all the answers

What is the primary function of inert ingredients in a pesticide formulation?

<p>Inert ingredients do not possess pesticidal activity but are added to improve application effectiveness, safety, handling, storage, or other characteristics of the final product.</p> Signup and view all the answers

What are the two main types of respirators used to protect against pesticide exposure, and what makes them different?

<p>Air-purifying respirators filter out contaminants from the air you breathe, while air-supplying respirators provide a separate source of clean air.</p> Signup and view all the answers

Flashcards

Halogens

Powerful oxidizing agents that kill by "burning" the cell membranes of microorganisms such as molds and bacteria.

Quaternary Ammonium (Quats)

Used on surfaces to kill microorganisms, including molds.

Phenolics

Used to treat equipment and surfaces to kill molds.

Formulation

The mixture of active and inert ingredients in a pesticide product.

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Inert Ingredients

Ingredients in a pesticide product that do not have pesticidal activity but are added to improve application effectiveness, safety, handling, storage, or other characteristics of the final product.

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Different Types of Formulations

Pesticide formulations are specialized and more effective depending on their intended use, application method, and environmental conditions.

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Emulsifiable Concentrates (EC)

Advantages: Easy to handle, transport, store, pour, and measure; little agitation required; not abrasive; leave little visible residue. Disadvantages: High concentration of active ingredients makes it easy to overdose; may damage treated surfaces; easily absorbed through skin; splashes and spills are difficult to clean; strong odor; corrosive to application equipment; flammable.

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Wettable Powders (WP)

Advantages: Easy to store, transport, and handle; less likely to harm treated plants, animals, and surfaces; not phytotoxic; less risk of skin and eye absorption. Disadvantages: Must be weighed; not easy to mix; inhalation hazard; suspended particles require good and constant agitation in the spray tank; abrasive to pumps and nozzles.

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Flowables (F or AF)

Advantages: Low exposure risk; not phytotoxic; seldom clog nozzles; splashes are less likely than with other liquid formulations. Disadvantages: Need shaking before measuring and mixing; containers may be difficult to rinse; require moderate agitation; may be abrasive to application equipment; may leave a visible residue on treated surfaces.

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Ready-to-Use or Premixed Sprays

Advantages: Neither measuring nor mixing is required; some are packaged and sold in or with an application device; less personal exposure risk. Disadvantages: Limited availability; high cost per unit of active ingredient.

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Pastes, Gels, and Other Injectable Baits

Advantages: Odorless; low human toxicity; lasts for a long period; low applicator exposure risk; minimizes human and pet exposure; very accurate in their placement and dosage; easily placed where insects shelter for maximum effectiveness. Disadvantages: Can become contaminated from exposure to other pesticides and cleaning products; when exposed to high temperatures, gels can run and drip; may stain porous surfaces; repeated applications can cause an unsightly buildup.

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Dusts

Advantages: Usually ready-to-use; good alternative where moisture from a spray might cause damage; applied with simple application equipment. Disadvantages: Easily drift off target during application; may irritate eyes, nose, throat, and skin; relatively high inhalation exposure risk to handlers and treated animals; dampness may cause product to clump; difficult to get an even distribution of particles.

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Solid Baits

Advantages: Ready-to-use; entire area need not be covered because pests go to bait; control pests that move in and out of an area. Disadvantages: May be attractive to children and pets; may kill domestic animals and non-target wildlife; require careful placement and inspection; pest may prefer other food to the bait; dead vertebrate pests may cause odor problems.

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Pesticide Label

The main method of communication between pesticide manufacturers and applicators. It is a legally binding document that you must follow.

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Label

The information printed on or attached to the pesticide container itself.

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Labeling

The label itself plus all other information about the product referenced on the label and given when you buy the product.

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Signal Word

Indicates the relative acute toxicity of the product to humans and animals.

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Risk

The chances of being harmed by a pesticide. Risk = Toxicity x Exposure.

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Toxicity

A measure of the ability of a pesticide to cause short-term injury.

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Exposure

When you get in contact with pesticides.

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Local Effects of Pesticides

Effects that occur at the area of contact with skin, eyes, or respiratory tract.

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Systemic Effects of Pesticides

Effects that occur when a pesticide is absorbed and circulated throughout the body.

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LD50

The amount of chemical that kills 50% of the test animals.

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LC50

The amount of concentration that is lethal when mixed with air in various concentrations.

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Toxicity Categories and Signal Words

Pesticides are labeled with a signal word based on the highest measured toxicity. The signal words are Danger-Poison, Danger, Warning, and Caution.

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Personal Protective Equipment (PPE)

Protects against pesticide exposure by covering the skin, eyes, and respiratory tract.

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Hazard Communications Standard (HCS)

The Hazard Communications Standard (HCS) applies to employees who handle or use hazardous chemicals in the workplace.

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Calibration

The process of ensuring that your equipment delivers the correct rate of pesticide uniformly to the target site.

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Overspray

The application of pesticide beyond the boundaries of the target area.

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Drift

The movement of pesticide in air currents or by diffusion onto property beyond the boundaries of the target area. Significant pesticide drift is considered negligent, and you can be prosecuted for the results of drift that goes off-site.

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Solubility

A measure of how easily a chemical will dissolve in a solvent, usually water. Pesticides that are highly soluble in water dissolve easily and are more likely to move with water in surface runoff.

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Adsorption

Pesticides that are strongly adsorbed are less likely to be carried from the treated area by water runoff or to leach through the soil into the groundwater.

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Volatility

The measure of a pesticide's tendency to turn into a vapor or gas. Volatility increases as the temperature and wind increase.

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Persistence

A measure of how long a pesticide remains in an active form in the environment.

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Degradation

The process when pesticides break down into simpler, and often less toxic compounds.

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Bioaccumulation

When the body accumulates pesticides in the body, particularly in fat tissue.

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Biomagnification

Occurs when the level of a pesticide builds up through the food chain. Bioaccumulation occurs in one particular organism, while biomagnification occurs across a series of organisms.

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Point Source Pollution

Pollution from a specific, identifiable place.

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Non-Point Source Pollution

Pollution from a widespread area like runoff, seepage, and leaching from areas of applications.

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Study Notes

Mold Remediation Products

  • Halogens kill microorganisms by burning cell membranes
  • Quaternary ammonium compounds (quats) are used on surfaces
  • Phenolics are used to treat equipment and surfaces

Formulation Definition

  • A formulation is a mixture of active and inert ingredients
  • Inert ingredients don't have pesticidal activity
  • They improve application effectiveness, safety, handling, storage, or other characteristics of the final product

Different Formulations

  • Pesticides come in various formulations for specialized use
  • Consider intended use, application equipment, target area, surface damage potential, and effectiveness
  • Examples:
    • Emulsifiable concentrates (EC): easy to handle, transport, and measure; little agitation required; high concentration of active ingredients; may easily overdose; can damage surfaces; strong odor; corrosive to equipment; flammable
    • Wettable powders (WP): easy to store, transport, handle; less likely to harm plants, animals, and surfaces; not phytotoxic; less risk of skin and eye absorption; must be weighed; need good agitation; abrasive to pumps and nozzles

Health Concerns Associated with Different Formulations

  • Using poisonous baits: advantages: odorless, long-lasting, low exposure; disadvantages: attracts non-target animals
  • Identify the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and the Environmental Protection Agency (EPA) as the agencies governing pesticide registration
  • EPA is responsible for registering pesticide products in the US
  • State and federal laws related to pesticide use might differ, with state laws sometimes being more strict than federal laws

Pesticide Application Records

  • Applicators must keep pesticide application records for at least two years
  • The records must include contact information, product description, application date, approximate time ranges, quantity used, each pesticide application location, and mixed/loaded location
  • Transporting pesticides: receive training, carry emergency response info, carry shipping papers, and placard the vehicle
  • Labels and SDS sheets are legally binding documents
  • List 5 times to read pesticide labels
  • Types of info you can find on a pesticide label: restricted use statement, trade name, EPA registration, ingredients/contents, safety info, signal words
  • Signal words: danger-poison, danger, warning, caution, and their relation to toxicity levels

Pesticide Exposure and Response

  • Causes of pesticide exposure - handling dusts, working with spray or dust drift, contact with containers
  • Symptoms of pesticide exposure - describe symptoms based on mode and location of exposure (dermal, inhalation, ingestion, eye)
  • Actions to take upon exposure - medical attention, check label, call poison control, first aid measures (dermal, inhalation, eye)

Pesticide Storage and Disposal

  • Designate a separate space for pesticide storage; keep away from residential areas, and keep away from wells
  • Follow label directions to secure and store hazardous materials; comply with all local, state, and federal laws regarding disposal
  • Improper storage of chemicals can contribute to contamination of the environment

Pesticide Spill, Containment, and Management

  • Designate spill response procedures
  • Recognize the need to contain the spill before cleaning
  • Contact local emergency agencies in the event of a spill

Pesticide Resistance

  • Pesticide resistance arises in pest populations when individuals with resistance survive pesticide applications
  • Factors influencing resistance in populations:
    • Resistance frequency before use
    • Pesticide mode of action
    • Pesticide persistence and frequency of use
    • Proportion of the population exposed to the pesticide
    • Pest life cycle
  • IPM practices to manage resistance include the use of pesticides only as needed and rotate pesticides with different modes of action

Pesticide Use in Residential Areas

  • Provide notice of residential and non-residential applications of pesticides
  • Understand the rules for regulated properties

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Description

This quiz covers the essentials of mold remediation products, including the roles of halogens, quaternary ammonium compounds, and phenolics. Additionally, it delves into formulations of pesticides, highlighting their ingredients, application types, and effectiveness for specialized uses. Test your knowledge on the different formulations and their characteristics.

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