Cruelty to animals isn't okay... Answered
Personally, I'm not an activist or animal maniac of any kind... but I find this instructable really irresponsible for the site to host and promote:
"DIY Kitty Crack: ultra-potent catnip extract"
The debate in the comments alone discusses how dangerous this can be for animals... and whereas I'm sure instructables bears no responsibility for what users do with their newly found knowledge, there's a line you guys should draw in the sand: don't support teaching people how to kill domesticated animals.
Take it down...