Yes, I have experience with cat nip

I used to buy the dry cat nip and put it in the baby sock and pin it to the cat scratcher. My cats would go crazy on the scratching post

Then I bought the spray catnip but it was not so effective like the dry catnip.
Solara, the pet shop near my place does sell dry cat nip for about RM5.00++. If you want I can help you buy and post it to you