SUSPENSION - - A pesticide mixture consisting of
RESTRICTED USE PESTICIDE-- A pesticide that
fine particles dispersed or floating in a liquid, usually
can be purchased and used only by certified applicators
or persons under their direct supervision. A pesticide
water or oil. Example: Wettable powders in water.
classified for restricted use under FIFRA, Section
TARGET-- The plants, animals, structures, area
or pests at which the pesticide or other control method
RISK-- A probability that a given pesticide will have
an adverse effect on man or the environment in a
TECHNICAL MATERIAL-- The pesticide active
ingredient in pure form, as it is manufactured by a
RODENTICIDE-- A pesticide used to control
chemical company. It is combined with inert
ingredients or additives in formulations such as
wettable powders, dusts, emulsifiable concentrates, or
RUNOFF--- The movement of water and associated
materials on the soil surface. Runoff usually proceeds
to bodies of surface water.
TOXIC-- Poisonous to living organisms.
SIGNAL WORDS-- Required word(s) which appear
T H R E S H O L D - - A level of pest density. The
on every pesticide label to denote the relative toxicity
number of pests observed, trapped, counted, etc. that
of the product. Signal words are DANGER-POISON,
can be tolerated without an economic loss or aesthetic
DANGER, WARNING, or CAUTION.
injury. Pest thresholds in urban pest management may
be site specific, for example, different numbers of
SITE-- Areas of actual pest infestation. Each site
cockroaches may be tolerated at different sites (e.g.,
should be treated specifically or individually.
hospitals and garbage rooms). A threshold may be set
at zero (e.g., termites in a wooden structure, flies in
SOIL INJECTION-- The placement of a pesticide
below the surface of the soil. Common application
method for termiticides.
TOLERABLE LEVELS OF PESTS-- The presence
SOIL DRENCH-- To soak or wet the ground
of pests at certain levels is tolerable in many
surface with a pesticide. Large volumes of the
situations. Totally eliminating pests in certain areas is
pesticide mixture are usually needed to saturate the soil
sometimes not achievable without major structural
to any depth.
alterations, excessive control measures, unacceptable
disruption, unacceptable cost, etc. Pest levels that
SOIL INCORPORATION-- The mechanical mixing
depend on pest observations vary. The tolerable level
of a pesticide product with soil.
in some situations will be zero (e.g. termites). Urban
pest management programs usually have lower
SOLUTION-- A mixture of one or more substances
tolerable levels of pests than agricultural programs.
in another substance (usually a liquid) in which all the
ingredients are completely dissolved. Example: Sugar
TOXICANT-- A poisonous substance such as the
active ingredient in a pesticide formulation.
SOLVENT-- A liquid which will dissolve another
TOXICITY-- The ability of a pesticide to cause
substance (solid, liquid, or gas) to form a solution.
harmful, acute, delayed, or allergic effects. The degree
or extent that a chemical or substance is poisonous.
SPACE SPRAY-- A pesticide which is applied as a
fine spray or mist to a confined area.
TOXIN-- A naturally occurring poison produced by
plants, animals, or microorganisms. Examples: The
STOMACH POISON-- A pesticide that must be
poison produced by the black widow spider, the
eaten by an animal in order to be effective; it will not
venom produced by snakes, the botulism toxin.
kill on contact.
UNCLASSIFIED PESTICIDE-- See General Use
SURFACE WATER-- Water on the earth's surface:
rivers, lakes, ponds, streams, etc. (see Groundwater).
Appendix C, Pg 7