Method for controlling pests by a pesticidal foam
AssigneeFoam Innovations, Inc.
InventorsBarbara H. Tiernan, Stanley M. Woogerd
Life of this patent
Estimating the term…
Abstract
A method is set forth of controlling pests such as termites. The method comprises mixing a residual pesticide with a foaming agent, water and air to produce a temporary non-solidifying pesticidal foam having an expansion ratio, defined as the ratio of the final foam volume to the sum of the volumes of the pesticide, the foaming agent and the water, of between 20 to 1 and 5 to 1. The foam is applied at a locus whereby it contacts a surface which defines the locus, and thereafter deposits the pesticide on the surface and dissipates, so as to provide residual pesticidal action on the surface.
Claims19
A method of controlling pests selected from the group consisting of termites, ants, spiders, mites, roaches, fleas, house nesting flies, silverfish, lice, earwigs, wasps, bees, sowbugs and crickets, comprising the steps of:
- mixing a liquid foamable residual pesticide with a foaming agent, water and air, the pesticide being selected from the group consisting of the carbamates, the pyrethrins, the pyrethroids, the organophosphates, the chlorinated hydrocarbons and the borates, to produce a temporary non-solidifying pesticidal wet foam having an expansion ratio, defined as the ratio of the final foam volume to the sum of the volumes of the pesticide, the foaming agent and the water, of between 20 to 1 and 5 to 1 and a flowability of less than about 30 seconds;
- and
- applying said foam, with repetition if necessary, at a locus whereby the foam contacts a surface which defines the locus, and thereafter deposits the pesticide on the surface and dissipates, so as to provide effective residual pesticidal activity on the surface.
A method of controlling pests selected from the group consisting of termites, ants, spiders, mites, roaches, fleas, house nesting flies, silverfish, lice, earwigs, wasps, bees, sowbugs and crickets beneath a concrete-slab-based building or concrete slabs associated with other buildings, comprising the steps of:
- forming holes through the slab along its marginal edges or other areas within the slab to a locus beneath the slab;
- mixing a liquid foamable residual pesticide, the pesticide being selected from the group consisting of the carbamates, the pyrethrins, the pyrethroids, the organophosphates, the chlorinated hydrocarbons and the borates, with a foaming agent, water and air to produce a temporary non-solidifying pesticidal wet foam having an expansion ratio, defined as the ratio of the final foam volume to the sum of the volumes of the pesticide, the foaming agent and the water, of between 10 to 1 to 1 and a flowability of less than about 30 seconds;
- and
- injecting the pesticidal foam, with repetition if necessary, through the holes so that the injected foam contacts a surface which defines the locus and thereafter deposits the pesticide on the surface and dissipates, so as to provide effective residual pesticidal activity on the surface.
Dependencies are inferred from the claim text.