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The M44 was invented in the 1960s to replace a similar device known as a 'Coyote Getter', which had been in use since the 1930s. The Coyote Getter used a .38 Special pistol cartridge case to contain the sodium cyanide mixture, and ejected the cyanide with a primer.
Pentobarbital was widely abused beginning in the late 1930s and sometimes known as "yellow jackets" due to the yellow color of Nembutal-branded capsules. [7] Pentobarbital in oral (pill) form is not commercially available. [4] [failed verification] Pentobarbital was developed by Ernest H. Volwiler and Donalee L. Tabern at Abbott Laboratories in ...
Face of a southern yellowjacket (Vespula squamosa)Yellowjackets may be confused with other wasps, such as hornets and paper wasps such as Polistes dominula.A typical yellowjacket worker is about 12 mm (0.47 in) long, with alternating bands on the abdomen; the queen is larger, about 19 mm (0.75 in) long (the different patterns on their abdomens help separate various species).
Typical rat poison bait station (Germany, 2010) Rodenticides are chemicals made and sold for the purpose of killing rodents . While commonly referred to as " rat poison ", rodenticides are also used to kill mice , woodchucks , chipmunks , porcupines , nutria , beavers , [ 1 ] and voles .
Vespula squamosa, or the southern yellowjacket, is a social wasp.This species can be identified by its distinctive black and yellow patterning and orange queen. [1] This species is typically found in eastern North America, and its territory extends as far south as Central America. [1]
Research continues to improve the effectiveness of delivery on brown rice by causing the poison to be retained on the bait longer and resist degradation by sunlight. [11] [12] The effect of the poison is believed to be cumulative: for example, the LC 50 for starlings was 4.7 ppm over 30 days, but only 1.0 ppm when fed for 90 days. [5]
In order to control the population of animals such as prairie dogs, pocket gophers, mountain beavers and ground squirrels, chlorophacinone bait is distributed into burrow openings or on the ground just outside burrows. Although each placement is covered with grass or shingle to avoid exposing nontarget organisms and chlorophacinone is not ...
Unexploded shells containing mustard gases and other chemical agents are still present in several test ranges in proximity to schools in the Edgewood area, but the smaller amounts of poison gas (4 to 14 pounds (1.8 to 6.4 kg)) present considerably lower risks. These remnants are being detected and excavated systematically for disposal.