US 6,143,313 AGranted

Insect pest control method

AssigneeEarth Chemical Co., Ltd.

InventorsTatsuei Ito, Mitsuyoshi Suzue, Masanaga Yamaguchi

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Abstract

Provided is a technique comprising blowing air onto a carrier having supported thereon a preparation containing a highly safe pesticidal component to vaporize and diffuse the component from the preparation under non-heating conditions thereby to control flying insect pests. An insect pest control method characterized by preparing a preparation-retaining material by supporting on a carrier a preparation containing a pesticidal component which is hard to vaporize at normal temperature, preferably at least one pesticidal component selected from compounds which are hard to vaporize at normal temperature and have a vapor pressure of lower than 1.times.10.sup.-3 mmHg and a boiling point of not lower than 120.degree. C./1 mmHg, setting the resulting preparation-retaining material, and contacting the preparation with an air current raised by an air blowing means to release the component into the air under non-heating conditions, an apparatus suitable therefor, and a carrier to be used in the preparation-retaining material set in the apparatus characterized by not blocking the air current toward the vent hole of the apparatus are provided.

Claims5

Dependent claims

An insect pest control method which comprises:

positioning in an insect pest control apparatus a preparation-retaining material which comprises a preparation containing at least one pesticidal component selected from at least one compound which has a vapor pressure of 1.times.10.sup.-7 mmHg to 1.times.10.sup.-3 mmHg at 30.degree. C. supported on a carrier having a ventilation structure so that an air current raised by a blower means is passed into and through the carrier thereby releasing the pesticidal component from the preparation-retaining material into the air under non-heating conditions in an effective amount capable of knocking down and/or killing Smokeybrown cockroaches at a rate of at least 65% in a room of 24 m.sup.3 within 24 hours or female adult northern house mosquitoes at a rate of at least 55% in a room of 24 m.sup.3 within 24 hours,
wherein said compound which has a vapor pressure of 1.times.10.sup.-7 mmHg to 1.times.10.sup.-3 mmHg at 30.degree. C. is selected from the group consisting of d-trans-2,3,5,6-tetrafluorobenzyl-3-(2,2-dichlorovinyl)-2,2-dimethyl-1-cyc lopropanecarboxylate, (5-benzyl-3-furyl)methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, 5-propargyl-2-furylmethyl d-cis/trans-chrysanthemate, (+)-2-methyl-4-oxo-3-(2-propynyl)-2-cyclopentenyl (+)-cis/trans-chrysanthemate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2,2,3,3-tetramethylcyclopropanecarboxylate, isomers thereof, and structural analogues thereof;
wherein said air current is raised by a blowing means located in an air passageway in said insect pest control apparatus;
and wherein said carrier is made of a material selected from the group consisting of paper, resin, ceramic, glass fiber, carbon fiber, chemical fiber, natural fiber, nonwoven fabric, porous glass material and metallic nets, and has a structure selected from the group consisting of a honeycomb structure, a ventilation blind, a lattice structure and a network structure.

1 more element

An insect pest control apparatus which comprises:

a main body having a ventilation means connected to a vent hole;
and
a preparation-retaining material comprising a preparation supported on a carrier set at one or more locations within the ventilation means so as to be brought into contact with an air current raised at the vent hole under non-heating conditions,
wherein said carrier is made of a material selected from the group consisting of paper, resins, ceramics, glass fiber, carbon fiber, chemical fiber, natural fiber, nonwoven fabric, porous glass material and metallic nets and has a structure selected from the group consisting of a honeycomb structure, a ventilation blind, a lattice structure and a network structure, and the preparation-retaining material does not block an air current raised in the ventilation means and contains at least one pesticidal component selected from at least one compound which has a vapor pressure of 1.times.10.sup.-7 mmHg to 1.times.10.sup.-3 mmHg at 30.degree. C. and is selected from the group consisting of d-trans-2,3,5,6-tetrafluorobenzyl-3-(2,2-dichlorovinyl)-2,2-dimethyl-1-cyc lopropanecarboxylate, (5-benzyl-3-furyl)methyl d-cis/trans-chrysanthemate, d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate, 5-propargyl-2-furylmethyl d-cis/trans-chrysanthemate, (+)-2-methyl-4-oxo-3-(2-propynyl)-2-cyclopentenyl(+)-cis/trans-chrysanthem ate, dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-2,2,3,3-tetramethylcyclopropanecarboxylate, isomers thereof, and structural analogues thereof, and
wherein when an air current raised by a blower means is passed into and through the carrier the pesticidal component is released from the preparation-retaining material into the air under non-heating conditions in an effective amount capable of knocking down and/or killing Smokeybrown cockroaches at a rate of at least 65% in a room of 24 m.sup.3 within 24 hours or female adult northern house mosquitoes at a rate of at least 55% in a room of 24 m.sup.3 within 24 hours.

2 more elements

Dependencies are inferred from the claim text.