DIY Kitty Crack: ultra-potent catnip extract

Step 14 Re-clarify the toluene

Ok, we're almost done! Repeat steps 11 and 12 on your toluene solution. That is, add a little table salt (or better yet, magnesium sulfate if you have it), stir it up really well, then pass it through a new coffee filter. The container that you filter it into this time will be its final resting home. Again, I'm using a little glass vial.

Ultimately, you end up with a very clear liquid that contains nothing but toluene and nepetalactone.