It affects the behavior of rodents to help itself get transmitted by invading the muscles and nervous system of the rat causing it to do the opoosite of what it would normally do in front of a cat.
Cremini, also known as crimini mushrooms, are simply a different strain than the white button. Developed by commercial growers, they are brown in color and have a slightly deeper taste. Growers also created the concept of portobello mushrooms to sell mature cremini.
But the 900 million pounds of mushrooms Americans consume each year are mostly of the Agaricus bisporus variety, which includes regular white mushrooms (button, closed cup, open cup, and large flat) and brown mushrooms (also called chestnut, champignon marron, crimini, and portobello).