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7A GENERAL PEST CONTROLS: UNIT 7.
APPLICATION AND MANAGEMENT
EQUIPMENT - TEST YOUR
KNOWLEDGE EXAM | QUESTIONS &
ANSWERS (VERIFIED) | LATEST
UPDATE | GRADED A+
Name and describe one popular type of compressed-air sprayer. Correct Answer: The 1-gallon stainless steel sprayer. This sprayer with a multiple-spray nozzle can apply insecticides accurately into insect harborages. Name three commonly used sprayers in general pest control. Correct Answer: Compressed-air sprayers, backpack sprayers, and power sprayers. What parts of a compressed-air sprayer should you inspect regularly? Correct Answer: Check the spray tank inside and out. Look for pinholes and stripped threads. Examine the check valve and plunger cup of the pump unit for wear and damage. Inspect the hose for cracks and soft spots. Check the nozzle by using a spray pattern check tray. For what types of applications might you use a pin-stream nozzle? Correct Answer: Crack and crevice applications. An injection tool (extension tube) directs and narrows the stream of pesticide.
For what types of applications might you use a flat-fan nozzle? Correct Answer: For general or spot applications on even surfaces. How often should you clean a compressed-air sprayer? Correct Answer: If you use your sprayer daily, clean it weekly. If you use it less often, clean it after each use. To mix insecticide concentrates, what temperature water should you put in the spray tank? Why? Correct Answer: Cool. Warm water helps break down pesticides and increases their odor. Never use warm water to mix pesticide sprays. True or False: Backpack sprayers are a good choice to apply pesticides in homes and small businesses. Correct Answer: False. Backpack sprayers are designed for continuous spraying of large areas such as commercial food facilities and warehouses. What are some advantages of using bait stations? Correct Answer: These devices are small and easy to move and place. They are designed to attract the target pest, not nontarget organisms. The toxin is contained, so that it is not easily accessible to children and pets. Name some factors that determine success in baiting for pests. Correct Answer: 1. Know when, where, and how to place baits and bait stations.
- Choose the baits that you know pests like to eat.
- If using guns or other injection devices, keep the delivery tube capped when not in use so the bait does not dry out.
Correct Answer: Bait applicators, or "guns," have dispensing tips that allow you to apply insecticidal pastes and gel baits packaged in various ways. They are well suited to treat cracks and crevices. What are the main purposes of sticky traps or pheromone traps? Correct Answer: To identify the pest and help estimate the size of the pest population. True or False: You may safely place insect light traps (ILTs) near food preparation areas. Correct Answer: False. ILTs may cause electrocuted flies to explode into prepared food. Describe the spray pattern delivered by a fan nozzle. Correct Answer: This nozzle puts out a band of spray. The liquid in the band is distributed like a bell- shaped curve: most in the center, less toward the edges. What places on a power sprayer should you check regularly for wear? Correct Answer: Check the hose and pump for wear and leaks to prevent accidental release. The nozzle is also a wear point. Check its delivery pattern regularly. How might you use a power sprayer? Correct Answer: To apply perimeter pesticide treatments around homes or apartment complexes. Some product labels also permit treating the outside surface of homes and other buildings to control insect pests. Other power sprayers are designed for use on wood floor joists and mudsills in crawl spaces and basements as well as structural wood in attics, decks, and log homes. Briefly describe the special precautions for storage of aerosol containers.
Correct Answer: Keep them in a cool place. Overheating can cause the contents to expand, which can make the container explode. Briefly describe aerosol systems and the proper use of aerosol containers. Correct Answer: Aerosols deliver small droplets that remain in the air briefly. The droplets may also settle on a surface that pest will contact. As a rule, use aerosol products as a directed spray, not as a space spray. Describe the characteristics of ultra-low-volume (ULV) and ultra-low-dosage (ULD) applications. Correct Answer: ULV and ULD systems create very small droplets and cover a relatively wide area (fogging). These fine droplets can penetrate into narrow cracks and crevices. The droplets may remain suspended in the air for several minutes before settling on horizontal and vertical surfaces, or directly on the target pest. ULV and ULD systems can kill insects that remain "in the open" during an application as well as those that hide in small harborages. Name some advantages and drawbacks of using ULD or ULV application equipment. Correct Answer: Low-volume applications use a small volume of product. ULD and ULV systems produce very fine droplets, spread efficiently over a large area. However, you must take special precautions when using these devices. First, extinguish all pilot lights and other open flames in the application area because some products are flammable. Second, wear a respirator. Manufacturers require respirator use to prevent inhalation exposure. What is the difference between cold foggers and thermal foggers? Which type is more often used? Correct Answer: Cold fog generators break insecticide into aerosol droplets mechanically. Cold foggers are mounted on trucks and are used to control mosquitoes, pests in large warehouses, and flies in some operations. Thermal fog generators break liquid pesticide into droplets using heat. Thermal foggers
Correct Answer: False. Changes in pressure should only be used to make minor changes in output. This is because a drastic change in pressure will also change the nozzle pattern and droplet size. What is the relationship between travel speed and rate of application? Correct Answer: Travel speed is the speed at which you and your equipment travel while you are making an application. The slower you walk, the more spray you deliver per unit area. Conversely, the faster you walk, the less spray you deliver. For example, doubling your walking speed will reduce the amount of spray applied by one-half. How do you go about mixing a pesticide? Correct Answer: Read the label. Many products come ready-to-use, but for those you have to mix yourself, the pesticide manufacturer provides dilution directions right on the label. A spray dilution chart on the label lists the amount of product to be mixed with diluent (usually water). The result is the recommended spray mixture. You need to calibrate your sprayer on a unit-area basis. The unit area is 1,000 square feet, and your test area is 200 square feet. Describe the steps to take your gauge:
- How much area your sprayer can cover per tankful. 2 .How much pesticide to put in the tank. Correct Answer: 1. Fill the sprayer with water.
- Spray the premeasured area using the same pressure and technique that you will use when you apply the pesticide.
- Refill the tank (with water) to the original water level. BE SURE TO NOTE HOW MUCH WATER YOU ADDED.
- Divide 1,000 square feet by 200 square feet. The answer is 5. Now multiply the volume of water you used to cover your test area by 5. The result is how much formulated pesticide (in gallons) you need to treat 1,000 square feet. Change nozzles or adjust speed or pressure and recalibrate as necessary.
- Determine the amount of pesticide needed for each gallon of water and the amount of spray mixture you need to cover the intended spray area.
