As years go by and some countries prohibit the use of pesticides yes, rats are adapting to modern poisons. When you put poison out for a rat you are also killing other good bugs, rodents not to mention birds or possibly your pets. The best thing to do is get a dog (ratter) or a cat. I had a Cairn and have a cat and the rats went away. I never had a rat in my home (my cat brought one in once and it's the one and only time I shrieked so loud I almost split the sound barer.) The rat was stunned and my brother picked it up in his jacket and put it outside. Rats are usually attracted near railroads where there is grain, or by garbage left out by humans. If you feed birds then you may get rats. There are more environmentally safe forms of getting rid of rats and it's best to let the exterminator do his job.
arsenic
Rats have adapted to town by becoming travelers. These rats can pick up and live anywhere from cans to couches.
You can use poisons or traps.
depends what breed you are talking about...
Rats have poor eyesight but great hearing and smell. Over decades, rats have adapted to be very wary of humans; rats breed and reproduce at alarming rates, and like birds, are excellent disease carriers, so they have been exterminated and feared by humans for a long time. Even my own pet rat is cautious when I feed him new treats. They are definitely smart enough to learn to avoid poisons and traps. I have even noticed how difficult it was to recapture my rat when he was an adolescent and he escaped. Poisons and traps are still used to rid homes of rats, and they are still effective; however, rats in particular can often cause problems when people need to get rid of wild rats, because of their ability to learn.
Ammonia has a very strong odor. It will deter rodents, including mice and rats. It is a more natural deterrent than poisons.
Snake poison
No. Rats are a modern species. Humans evolved from a series of hominids and hominins, which themselves evolved from smaller mammals which survived the K-T extinction event. These smaller mammals are also what rats evolved from.
Kangaroo rats and camels are both mammals which are specially adapted to live in the desert and in arid areas.
Yes, the commonly used poisons for rats and mice will kill raccoons. Raccoons can also die from eating a dead rat or mouse that was killed with poisons.
Unscientifically it poisons them and slows their central nervous system activity and stops internal organ functioning.
Hamsters are rodents. Their cousins are rats and mice. Hamsters do come from the wild and became adapted to humans. I hope this helped!