I find catnip toys lose their effect within the first month. I purchased a small toy in the shape of a mouse you can open and change the catnip yourself works best.

The effects would depend on the cat though! :)

There are over 250 types of catnip. The most common are:

- common catnip

- camphor catnip

- greek catnip

- lemon catnip

- catmint.

Learn more about these types of catnip here: http://www.catnipsum.com/sciency_stuff.html

The main ingredient of catnip is a perennial herb which is a member of the mint family. There are different types of catnip: Greek catnip, Lemon catnip and others.

they are bubbles that you can blow that have the catnip sent in them

A Taste of Catnip was created in 1966.