The following table denotes the symbols available using this technique. These symbols are generally not found on keyboards, but they are viewable in most word processors and Web browsers. An extended set of symbols is viewable in more advanced Web browsers.
The ideal poison for committing a homicide must be: odorless, tasteless, difficult to detect and mimic the symptoms of naturally occurring diseases, finds Anil Aggrawal, professor of Forensic Medicine at the Maulana Azad Medical College in New Delhi, India.
Yu definitely do not want to use poison to get rid of a rat problem. It does not solve the rat problem. It is inhumane, as the death is slow and painful. It does not kill all the rats. Not every rat that eats poison dies. The rats that do die will die in your attic or walls, and cause a horrible stink - I guarantee it.