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Permethrin is a broad-spectrum and highly effective insecticide that targets various ectoparasites, including cockroaches, mosquitoes, flies, and agricultural pests. It acts quickly, is non-toxic, and leaves no pollution, with its effectiveness lasting over 42 days. For cockroach control, a 0.025% emulsion can be sprayed directly on their bodies. To eliminate cockroaches and other similar pests, a medicated bath with a 0.022% emulsion is recommended. For flies, a 0.1% emulsion can be applied to the body surface. When it comes to indoor mosquito control, spraying at a concentration of 25–125 mg per cubic meter is effective.
Phosphorus fly poison, an organophosphate insecticide, is commonly used in cattle. A daily dose of 0.11g per kilogram of body weight is typically administered, or between 5g and 25g per kilogram for more severe infestations. After 6 to 7 days, it effectively kills all life stages of the leather fly maggot, and is also effective against species of Caenorhabditis and Corydalis. Spraying a 0.25% to 2.5% solution helps prevent larval infections and has some effect on flies, cockroaches, and other pests.
Cyhalothrin valerate is a powerful contact insecticide that works on cockroaches, mosquitoes, and other pests. It also has stomach toxicity and repellent properties, and can kill eggs in a single application. It degrades rapidly, has low residual toxicity, and is suitable for livestock sensitive to organophosphates. The recommended concentrations vary: 0.02% for cattle, 0.008% to 0.02% for pigs, sheep, dogs, and chickens, and 0.0004% for cattle, pigs, rabbits, dogs, and chickens. For fleas, a concentration of 0.004% to 0.008% is used. Application methods include spraying, coating, and medicated baths. Indoor treatment involves 0.03 ml to 0.005 ml per cubic meter, followed by sealing for 4 hours after spraying.
Fly venom phosphorus poison is suitable for use in dairy cows. Spraying a 0.5% aqueous solution or 2% emulsion helps kill leather fly maggots and prevents larval infections. Applying 0.025% to 0.05% dusting powder is effective for pigs as well. It is also effective when given orally to sheep, cattle, and cypress nematodes at a dose of 2 mg per kilogram of body weight. However, caution should be exercised when using it on sheep. For chickens, mixing 40 mg per kilogram of feed helps control chicken lice and other ectoparasites.