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The resulting agricultural failures, compounded by misguided policies of the Great Leap Forward, triggered a severe famine from 1958 to 1962. The death toll from starvation during this period reached 20 to 30 million people, [ 16 ] underscoring the high human cost of the ecological mismanagement inherent in the "Four Pests" campaign.
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Before the advent of anticoagulants, phosphides were the favored kind of rat poison. During World War II, they came into use in United States because of shortage of strychnine due to the Japanese occupation of the territories where the strychnine tree is grown. Phosphides are rather fast-acting rat poisons, resulting in the rats dying usually ...
In non-lethal versions, the bucket is usually empty, allowing the mouse to live but keeping it trapped until the owner of the trap can release them. Another design features a bowl (or similar container) containing a 1–2 centimetres (0.39–0.79 in) deep layer of vegetable oil , with a ramp leading up to the edge of the bowl.
The active compound in this rat poison was thallium sulphate, imported from Germany. [5] Its advantages as a rodenticide, that it was odorless and practically tasteless and swift acting, were also realised by amateur poisoners; it was also inexpensive, required no licence to purchase, gave symptoms similar to known diseases, and one gram was ...
d-CON is an America brand of rodent control products, which is distributed and owned in the United States by the UK-based consumer goods company Reckitt.. The brand includes traps and baits for use around the home for trapping and killing some rats and mice.
New Zealand is the largest user of 1080 poison, [10] using about 80% of the world's supply. [11] Biodegradable 1080 poison is the only poison currently registered for use on mainland New Zealand as suitable for aerial targeting of the common brushtail possum ; [ 12 ] a major conservation and agricultural pest . [ 13 ]
The use of biological pest control agents, or using predators, parasitoids, parasites, and pathogens to control agricultural pests, has the potential to reduce agricultural pollution associated with other pest control techniques, such as pesticide use. The merits of introducing non-native biocontrol agents have been widely debated, however.