Cat grass (despite the name lol) is a different thing to catnip (which is the one that gets them spaced out). Cat grass is just a type of regular grass that you can grow indoors for your cat to eat.
Outdoor cats will eat grass to help their digestion, so it’s important to have something safe for indoor cats to eat otherwise they will just eat anything green and that could be bad for them.
It’s easy enough to grow from seed or you can get it already growing in a pot.






All power to you friend. Nevertheless it’s best to be informed, especially when attempting to make a better alternative.