No, it does not. Catnip is similar to Valerian, which rats also love. They love Valerian enough to walk into traps baited with Valerian. Catnip has a lesser effect on them, but it definitely does not deter them.
Ammonia has a very strong odor. It will deter rodents, including mice and rats. It is a more natural deterrent than poisons.
Yeah, but they won't eat it because of the smell.
by definition ld50 is when 50% survive or dead,,answer will be 5 if i count well
Probably, the smell and the rats deter most people. It makes the land values less, too.
It generally takes a few days. Try giving them another dose.
D-con is a poison only-not a deterrent. Poison inside could result in 1 dead inside somewhere you can't reach. Your best bet interior is traps.
It can be in a large enough dose. Decon is actually not a poison per say but a blood thinner. People take blood thinners and live it just has to be a regulated dose. Rats are easy to poison because they cannot physically vomit. They eat the high dose blood thinner and bleed out.
It's the other way around. Coumadin, long-time anticoagulant medication used by humans was applied as a rat toxin. The idea was that, a medication in a dosage harmless to humans would prove fatal for rats, mostly because of comparative sizes: A dose for a 150lb human was a massive overdose for a 6oz. rat. And this worked for a while. However, rats evolved past this and now, a human-normal dose of coumadin is no longer toxic for rats. To address this we've gone on to "super-coumadin" for rats -- another anticoagulant, only this time the rat-lethal (or LD50) does is also acutely toxic to humans.
The exact amount in humans is uncertain as such an experiment would be unethical. In rats the LD50 is 2000 mg/kg (LD50 is the dose that kills 50% of those getting it). A dose much less than this will cause some damage in almost all. The Lowest Published Lethal Dose (LDL) [Human Infant] - Route: Oral; Dose: 442 ku/kg/11D.
No, rats are vertebrates. Rats have backbones.
The way that toxic materials are defined is by how well they kill rats. This is called the "Median Lethal Dose" or LD50. It is usually expressed as "LD50, Oral, Rat" meaning that the subjects were specially bred, white, Norway rats and the dose was given by mouth. The dose is presented as milligrams per kilogram of rat.The U.S. EPA and OSHA define a toxin as a substance that has an LD50 of 500 mg/Kg or less. Acutely toxic materials have an LD50 of 50 mg/Kg or less.The U.S. DOT defines poison as a substance with an LD50 of 200 mg/kg or less.
yes and no. if u like rats and they don't bite u then rats can be trained. if u hate rats then rats can't be trained.