Grade A â Eggs appear to be the same as Grade AA, but the difference is a slightly lower interior quality. These type of eggs are commonly sold in local supermarkets. Grade B â Eggs are noticeably different.
Rodenticides, colloquially rat poison, are typically non-specific pest control chemicals made and sold for the purpose of killing rodents. Some rodenticides are lethal after one exposure while others require more than one.
The length of time a rodenticide takes to kill the rat depends on the type and class of rat poison used. As already noted, anti-coagulant based poisons take anywhere from a few days to two weeks to work, largely dependent on which generation of anti-coagulant poison is used.