WDI EXAM QUESTIONS & ANSWERS
In order of severity, what are the 3 signal words/terms found on pesticide labels which
indicate a pesticide's risk/deadliness to humans? - Answer -Caution, Warning, Danger
Using barriers to prevent pests from getting into an area is an example of which type of
pest management method? - Answer -Mechanical
*** What does LD50 indicate? - Answer -Lethal dose to 50% of test subjects
The routes of entry statement "Extremely hazardous by skin contact- rapidly absorbed
theough the skin." on a label would most likely carry which signal word? - Answer -
Danger
Which signal word/term is associated with very low oral LD50 values? - Answer -
Danger - Poison
How often should work clothes worn to apply pesticides be laundered with a suitable
detergent? - Answer -After each day's use
Determining when to apply a pesticide includes considering the ____ of the pest, as well
as the ____ conditions. - Answer -Life cycle, Weather
Which application method involves uniformly applying a pesticide to an entire area or
field? - Answer -Broadcast
What is the 2 primary ways to identify a Formosan soldier? - Answer -- Teardrop-
shaped head
- Crossed mandibles/jaws
What are the 3 features of a drywood termite fecal pellet? - Answer -- 6-sided/dimpled
- Pointed on one end
- Flat on the other end
*conical shape*
Name 3 types if termiticides - Answer -Repellents, Non-repellents, Baits
Name 3 termite treatment application procedures - Answer -Trenching, Rodding,
Foaming
Name 3 categories of wood destroying beetles - Answer -Lyctid, Anobiid, Bostriched
Name 3 species of wood destroying beetles - Answer -Powder post, Furniture, Old
house borer
, Do carpenter ants eat wood? - Answer -No
What is the typical size range of carpenter ants? - Answer -1/4" - 3/4"
Which gender of carpenter bees will sting humans? - Answer -Female
How much moisture content in wood allows fungi to grow? - Answer -20% or more
What caste of termite makes up the majority of a colony? - Answer -Workers
Name 3 areas that should be inspected on the interior of a structure - Answer -Kitchen,
Bathroom, Utility closet/room
Name 4 things commonly found in carpenter ant frass - Answer -Shredded wood,
Drywall, Insulation, Dead ants/insects
What physical characteristic visually distinguishes carpenter bees from
bumble bees? - Answer -Carpenter bees have hairless abdomens (butts)
What works better to deter carpenter bees - wood stain or latex paint? - Answer -Latex
paint
What is the size of the entrance/hole to a carpenter bee nest? - Answer -1/2" diameter
What caste of wood boring beetle does the most damage? - Answer -Larvae
How long is the life cycle of most powderpost beetles? - Answer -One year
T/F : You must have a TDA license to perform structural pest control, regardless of the
pesticides used. - Answer -True
What does the acronym "TDA" stand for? - Answer -Texas Department of Agriculture
Which dry/solid formulation is mixed in water and reduces the risk of inhalation
exposure dring mixing and loading? - Answer -Wettable powder (WP)
What time of day should a pesticide be applied to best protect bees from pesticide
injury? - Answer -In the evening, or at night
How many types of termites are inspected for? - Answer -3
What are the types of termites that are inspected for? - Answer -Subterranean,
Dampwood, Drywood
How many castes of termites are there? - Answer -3
In order of severity, what are the 3 signal words/terms found on pesticide labels which
indicate a pesticide's risk/deadliness to humans? - Answer -Caution, Warning, Danger
Using barriers to prevent pests from getting into an area is an example of which type of
pest management method? - Answer -Mechanical
*** What does LD50 indicate? - Answer -Lethal dose to 50% of test subjects
The routes of entry statement "Extremely hazardous by skin contact- rapidly absorbed
theough the skin." on a label would most likely carry which signal word? - Answer -
Danger
Which signal word/term is associated with very low oral LD50 values? - Answer -
Danger - Poison
How often should work clothes worn to apply pesticides be laundered with a suitable
detergent? - Answer -After each day's use
Determining when to apply a pesticide includes considering the ____ of the pest, as well
as the ____ conditions. - Answer -Life cycle, Weather
Which application method involves uniformly applying a pesticide to an entire area or
field? - Answer -Broadcast
What is the 2 primary ways to identify a Formosan soldier? - Answer -- Teardrop-
shaped head
- Crossed mandibles/jaws
What are the 3 features of a drywood termite fecal pellet? - Answer -- 6-sided/dimpled
- Pointed on one end
- Flat on the other end
*conical shape*
Name 3 types if termiticides - Answer -Repellents, Non-repellents, Baits
Name 3 termite treatment application procedures - Answer -Trenching, Rodding,
Foaming
Name 3 categories of wood destroying beetles - Answer -Lyctid, Anobiid, Bostriched
Name 3 species of wood destroying beetles - Answer -Powder post, Furniture, Old
house borer
, Do carpenter ants eat wood? - Answer -No
What is the typical size range of carpenter ants? - Answer -1/4" - 3/4"
Which gender of carpenter bees will sting humans? - Answer -Female
How much moisture content in wood allows fungi to grow? - Answer -20% or more
What caste of termite makes up the majority of a colony? - Answer -Workers
Name 3 areas that should be inspected on the interior of a structure - Answer -Kitchen,
Bathroom, Utility closet/room
Name 4 things commonly found in carpenter ant frass - Answer -Shredded wood,
Drywall, Insulation, Dead ants/insects
What physical characteristic visually distinguishes carpenter bees from
bumble bees? - Answer -Carpenter bees have hairless abdomens (butts)
What works better to deter carpenter bees - wood stain or latex paint? - Answer -Latex
paint
What is the size of the entrance/hole to a carpenter bee nest? - Answer -1/2" diameter
What caste of wood boring beetle does the most damage? - Answer -Larvae
How long is the life cycle of most powderpost beetles? - Answer -One year
T/F : You must have a TDA license to perform structural pest control, regardless of the
pesticides used. - Answer -True
What does the acronym "TDA" stand for? - Answer -Texas Department of Agriculture
Which dry/solid formulation is mixed in water and reduces the risk of inhalation
exposure dring mixing and loading? - Answer -Wettable powder (WP)
What time of day should a pesticide be applied to best protect bees from pesticide
injury? - Answer -In the evening, or at night
How many types of termites are inspected for? - Answer -3
What are the types of termites that are inspected for? - Answer -Subterranean,
Dampwood, Drywood
How many castes of termites are there? - Answer -3
