초록 ▼

A molded non-layered unitary article (serving as a larvicide carrier) is formed solely from a substantially homogeneous mixture consisting of cork particles and a molding- type of plaster into which a larvicidal micro-organism, such as B.t.i., has been added. The article may be dispensed convenientl

A molded non-layered unitary article (serving as a larvicide carrier) is formed solely from a substantially homogeneous mixture consisting of cork particles and a molding- type of plaster into which a larvicidal micro-organism, such as B.t.i., has been added. The article may be dispensed conveniently, on to either small or large bodies of water, without regard for its orientation relative to the body of water. The article has a specific gravity of less than 1.0 and floats freely on the surface of the water, but if desired, may have a restrained-floating application. A sustained release of the larvicidal micro-organism is assured for effective mosquito control. All of the ingredients are found in nature, are bio-degradable, and are non-toxic to non-target organisms; hence will not adversely affect the environment. In a preferred embodiment, the article is substantially-toroidal and slightly-tapered and is provided with a central opening therein.

대표청구항 ▼

A floating dispenser for the sustained release of a larvicidal micro-organism consisting of Bacillus thuringiensis for the destruction of the mosquito or black fly larvae which breed on the surface of a body of water, comprising a unitary substantially homogenous non-layered molded article consistin

A floating dispenser for the sustained release of a larvicidal micro-organism consisting of Bacillus thuringiensis for the destruction of the mosquito or black fly larvae which breed on the surface of a body of water, comprising a unitary substantially homogenous non-layered molded article consisting of a plurality of cork granules, a molding plaster and the Bacillus thuringiensis, wherein the article comprises a substantially-toroidal slightly-tapered molded article having a central bore, whereby if desired, the article may be tethered or staked in a restrained-floating application, said larvicidal micro-organism further comprising a Bacillus thuringiensis Berliner var. israelensis and its accompanying proteinaceous parasporal particles which contain protoxin, wherein the article has a specific gravity of less than 1.0 and may be randomly and conveniently dispensed on to the surface of a body of water without regard for the orientation of the article with respect to the surface of the water, wherein the article will continue to float on the surface of the water and will gradually disintegrate into a plurality of individual floating particles including cork granules substantially covered by the molding-type of plaster containing said larvicidal micro-organism, whereby a sustained release of the larvicidal micro-organism is achieved over a sufficient period of time and over a relatively wide area to destroy the larvae, and wherein all of the ingredients in the article are found in nature and are substantially bio-degradable and non-toxic to non-target organisms, and will not adversely affect the environment.