Quick Facts Flashcards
Considered a nuisance pest because of their often high numbers and because crushing them may leave stains
Clover mites
Can be identified by their long front legs, which are longer than their bodies
Clover mites
Microscopic fecal particles and shed exoskeleton fragments become mixed with floating house dust
House dust mite
Cannot thrive when relative humidity is less than 50%
House dust mite
Mites that are occasional biting pests of humans
Bird and rodent mites
Nest area should be treated immediately to reduce risk of live mites dispersing from site and moving into other areas of the home
Bird and rodent mites - any bird or rodent nests
Small, but visible mites that can be seen while biting a human and removed from the skin with a piece of tape
Bird and rodent mites
Can bite people but do not burrow into the skin as many people believe
Chigger mite larvae
Pierce the skin and inject a digestive enzyme that disintegrates the skin cells, the skin then swells around the mite, making it difficult to see or remove
Chigger mite larvae
Itching may not occur for several hours after exposure so people may believe they’re being bitten in their home
Chigger mite larvae
Aka human itch mite
Scabies mites
Microscopic mites that cannot be seen with the naked eye
Scabies mites
Females burrow through, and feed on human skin
Scabies mites
Transmitted mostly by physical contact or bed linens recently used by an infected person
Scabies mites
Pesticides should not be applied to homes for these mites
Scabies mites
A thorough soapy shower in cool to lukewarm water. Lather and rinse several times. This is an effective treatment for what?
Chigger mite bites
Only scorpion in the U.S. that is a serious concern for human heath
Arizona bark scorpion
Anti venom for Arizona bark scorpion available if
Within two hours of the sting
Sting site will not be swollen or discolored as it would with a less dangerous species
Arizona bark scorpion
Use ice pack to reduce the pain. Do not submerge in ice water.
Arizona bark scorpion
Morphine should be avoided for Arizona bark scorpion stings because
It has a synergistic effect with the venom
Both nymphs and adults feed on blood (preferably humans)
Bed bugs
Five instars and require a blood meal for each molt
Bed bugs
Adult female requires a blood meal before laying eggs
Bed bug
Bites can be highly irritating or no reaction at all
Bed bugs
Hairs are equal to or longer than widths of their eyes
Bat bug
Female more round than male
Bed bug
Social wasps are known as
Vespids
Establish colonies in the spring and abandon them when winter approaches
Yellowjacket wasps
Populations peak in the summer and fall
Yellowjacket wasps
Generally build their nests below ground, although above ground nests do occur
Yellowjacket wasps
Opportunistic feeders and will eat whatever is available — often found near trash cans
Yellowjacket wasps
Relatively large colonies, range in size from a few thousand to tens of thousands
Yellowjacket wasps
Can sting multiple times
Yellowjacket wasps
Nests built above ground can superficially resemble hornet nests
Yellowjacket nests
Nests are more irregular in shape than hornet nests
Yellowjacket wasps
Nests are usually associated with holes in the ground or voids in walls, soffits, eaves, or concrete blocks
Yellowjacket nests
For ground nests, dust an area for 6” around the entrance hole and/or puff dust into entrance hole
Yellowjacket wasps
If it is an aerial nest, then an appropriately labeled aerosol works well
Yellowjacket wasps
Use dust application if application must be made during day while foragers are out so they come in contact when returning to nest
Yellowjacket wasps
Found above ground in eaves or other protected places
Paper wasps
Brood cells are exposed, but chambers are protected by umbrella shaped nest
Paper wasps
Colonies are relatively small, usually containing fewer than 200 workers — can grow quite large
Paper wasps
Nests are not typically reused the following season
Paper wasps
Do not sting, but their bites can be quite painful, especially when they inject formic acid in wound
Carpenter ants
Nest in wood or above-ground cavities
Carpenter ants
Prefer to attack wood softened by fungus and often associated with moisture problems
Carpenter ants
Active galleries are kept clean of debris
Carpenter ants
Perimeter treatment of a nonrepellent. Trim any tree branches from structure. Caulk any gaps where electrical and water lines enter
Carpenter ants
May invade human tissue, causing myiasis
Lesser house fly
Known to harbor at least 100 different pathogens
House flies
Rarely breed indoors
House flies
Most stay within 1-2 miles of their larval habitat if food is available
House flies
During the day, fly or rest less than 5 feet from ground. At night, rest primarily 5 feet above ground
House flies
Females commonly lay eggs in over-watered soil of potted plants
Fungus gnats
Aka humpbacked flies
Phorid flies
Sometimes mistaken for fruit flies
Phorid flies
Some species are known to breed in human corpses
Phorid flies
Heavy infestations in buildings are commonly associated with underground sewage lines that are broken
Phorid flies
Of great concern in health-care facilities because of their unsanitary habits and because larvae have been found in the open wounds of patients
Phorid flies
Use ILT for adults in mausoleums or temporarily until breeding source can be found and removed in commercial accounts
Phorid flies
Pouring bleach and/or boiling water down infested drains is not effective because it does not kill larvae
Phorid flies
Residuals not required since breeding site elimination offers best controlling term
Phorid flies
Love to eat sweets
Odorous house ant
Single, flattened node is difficult to see
Odorous house ant
Construct nest near moisture source, especially around hot water pipes and heaters
Odorous house ant
Most likely to enter buildings when their honeydew source is reduced during rainy weather or with leaf fall
Odorous house ant
Sometimes mistaken for fire ants but are monomorphic
Pavement ant
Medium-sized, slow moving ant
Pavement ant
May nest outdoors in soil or indoors
Pavement ant
Not aggressive, but workers can bite and sting
Pavement ant
When they excavate for a nest, they typically bring soil up to the surface and pile it it up around the entry hole
Pavement ant
Prefer high protein diet
Red imported fire ant
Very important economically and medically
Red imported fire ant
Responds aggressively when nest is disturbed
Red imported fire ant
Benzoyl urea insecticide
Acts as an IGR
Imidacloprid
Nervous system toxin
Using low rates of insecticides allows slightly resistant individuals to survive and develop resistance.
True - to avoid this risk pesticides should always be applied at the label rate, especially for high risk pests like mosquitoes
What class of pesticides was DDT?
Nerve agents that affect the sodium channels or the chloride channels in nerve cells
Malathion, diazinon, chlorpyrifos, and acephates are examples of
Organophosphates
DDT is an example of what class of pesticides?
Chlorinated hydrocarbons
Chlordane, Lindan, aldrin, dieldrin, heptachlor, dicofol, and endosulfan are examples of
Chlorinated hydrocarbons
Must be ingested to be effective. More than one mode of action.
Borates
Borax and boric acid are examples of
Borates
Unlike chlorinated hydrocarbons, these are not very persistent and break down relatively quickly in the environment
Organophosphates
Nerve agent effective against a broad range of insects
Organophosphates
Work by inhibiting acetylcholinesterase in the nerve cell
Organophosphates
Dichlorvos, malathion, acephate, and naled are examples of
Organophosphates
Safer alternative to Organophosphates
Carbamate
MOA is identical to Organophosphates
Carbamate
Carbaryl and propoxur examples of
Carbamates
Highly abrasive and is made of tiny, sharp pieces of fossilized shells
Diatomaceous earth
Few examples of resistance have been recorded for
Physical toxicants
Affect the sodium channels in nerve axons
Pyrethrins
Have the ability to knock down (paralyze) insects very quickly, but many insects have the ability to quickly break down (metabolize) them and thus recover
Pyrethrins
Almost always mixed with a synergist
Pyrethrins
Prevents the insects from metabolizing Pyrethrins
Synergist
Piperonyl butoxide and MGK-264 are
Common synergists
Why is controlling bed bugs with pyrethroids proven to be difficult?
Pyrethroids have the same MOA as DDT. Bed bud populations that developed DDT resistance retained this resistance because both work by affecting sodium channels
Esfenvalerate, fluvalinate, and etofenprox
Exceptions to the ‘thrin’ rule of pyrethroids
Used worldwide as insecticides more than any other class of insecticide
Neonicotinoids
Neonicotinoids MOA
Nerve agents - bind to the nicotinic acetylcholine receptors - prevents transmission of information from one cell to another
Persistent, broad-spectrum insecticides with relatively low toxicity to people and other mammals
Neonicotinoids
Imidicloprid, thiamexotham, acetamiprid, dinotefuran, and clothiandin are examples of
Neonicotinoids
Slow acting and do not repel
Phenylpyrazoles
Often used in baits for ants, termites, and cockroaches
Phenylpyrazoles
Work by inhibiting energy production within the cell, and disrupting the nervous system by blocking the GABA-activated chloride channel
Phenylpyrazoles
Fipronil is the best known example
Phenylpyrazoles
Diflubenzuron, hexaflumuron, noviflumuron, and lufenuron
IGRs (chitin synthesis inhibitors)
Pesticide toxicity classes
1 - extremely toxic (danger) less than a teaspoon
2 - very toxic (warning) teaspoon to an ounce
3 - moderately toxic (caution) ounce to a pint
4 - slightly toxic (caution) pint to a quart or more
Who requires SDS?
OSHA
Most likely way to be exposed to pesticide
Dermal
Material of gloves to be worn with fumigant application
Cotton
Birds associated with histoplasmosis
Starlings and house sparrows
Only birds that are not protected by federal laws and may be killed or removed without permits
European starlings, house sparrows, pigeons
*state and local laws may forbid these and other control methods
Primary transmitters of hantavirus
Deer mice
Should be worn when inspecting a bat-infested area
Respirator with a particle filter among other PPE
Control measures are mainly limited to exclusion and sanitation due to federal and local laws
Bats
2/3 water, concentrate, then
Add remaining 1/3 water
To plug holes and voids
Steel wool or copper mesh
Used to pest proof holes larger than 1/2 inch
Fast drying cement, polyurethane foam, and other materials
Different formulations of the same pesticide may require PPE from different chemical-resistance categories.
True according to OSHA
Special care should be taken to protect what two body parts because they absorb pesticides faster
Head and genital areas
The most common cartridge requirement for pesticide applicators
Organic vapor (OV)
If more than one pesticide formulation is to be mixed in one tank, they should be added in the following order:
- Wettable powders
- Flowables and dry flowables
- Water-soluble concentrates
- Emulsifiable concentrates
Calibrate equipment at least
At the beginning and middle of each spraying season
The best place to dispose of surplus pesticide mixture is
On the site of application
If too much pesticide is mixed, it may be
Applied at other locations with a similar pest problem, or it may be saved for a future application.
Triple rinsing ensures
99% removal of pesticide residue
How to prevent a pesticide container from being reused
Punch holes in the top and bottom of the container
Three C’s in event of a pesticide spill
Control, contain, clean up
Four routes of entry recognized for pesticide exposure to humans
Dermal, oral, inhalation, and ocular
In the event that skin has been burned by pesticides, do not
Apply oil, ointment, grease, or other chemical or drugs
In the U.S., it takes about _______ years to develop a new pesticide and bring it to market.
8-10
Indicates that the environment, the user, or other people can possibly be harmed through the use, even if used as directed.
Restricted-use pesticides
The antenna of termites are always monoiliform and termites in North America never have
clubbed or bent antennae
Subterranean termite soldiers have smooth
Mandibles
Most dampwood and drywood soldiers in North America have jagged
Mandibles
Naustiform termites
The soldiers of some species that are known to use chemical secretions from a special gland on the head to repel or entangle prey
Subterranean termite soldiers pronotum is
Narrower than the head
The pronotum of most drywood and dampwood termites is
As wide or wider than the head
Fontanelle
Small opening on the top of the head that secretes defensive fluids
Has a pronounced fontanelle on the front part of its head
Formosan subterranean termite
Drywood termites infest wood that is
I’m good condition (moisture levels less than 15%)
Fumigants more effective against adults because they must be
Breathed
Provide a fast knockdown
ECs
Shelf life is often shorter
Baits - since they contain food
Generally produce large particles
Aerosol cans
Many beetles get their common name from
The food preferences of the larvae
The first sign of wdo beetle damage
Usually the presence of holes in wood
Important tool when conducting inspections for wdo beetles
Moisture meter
Minimal standard for monitoring several auditing systems
Quarterly - but monthly trends provide even more detail
Ants follow structural guidelines so traps and baits
Should be placed along foraging routes
One pheromone trap should be used for every
250-500 square feet for small areas and every 1,000-2,000 square feet for large warehouse areas