Timed release pest control composition and means
AssigneeMetropolitan Mosquito Control District
InventorRobert D. Sjogren
Life of this patent
Estimating the term…
Abstract
A controlled slow release pest control composition comprising an encapsulated pesticide, carbon and plaster.
Claims23
A controlled slow release pest control composition that can be hardened by the addition of a sufficient plaster hydrating amount of water, which consists essentially of an effective pest population controlling amount of a pest control agent, a plaster having high compressive strength of at least about 5,000 lbs. per square inch, and an effective electromagnetic radiation absorbing amount of finely divided carbon wherein the composition can be used in the form of a solid pest control means that when immersed in an aqueous pest breeding site can release an effective amount of the pest control agent for at least 30 days, and that when dry does not release the agent.
A solid pest control means which consists essentially of an effective amount of a pest control agent, an effective slow release amount of a plaster having a high compressive strength of at least 5,000 lbs. per square inch, an effective ultraviolet light absorbing amount of finely divided carbon particles, and a plaster hardening amount of water, wherein the object is hard, can be distributed over large areas by mechanical means, has a surface area of about 500 to about 50,000 mm.sup.2, when immersed in an aqueous pest breeding site can provide an effective amount of the pest control agent for at least 30 days, and when dry does not release the agent.
Dependencies are inferred from the claim text.