[Vancouver] Where can I buy Rit and BKF?

Anyone around here know where I can find these items?

I'm looking for these in particular.



The Rit brand is what I'm really hoping to find.

I've checked:
Walmart
Superstore
Canadian Tire
Shopper's Drug Mart
Save-On
Safeway - I found Rit DYES here, but everywhere else, none of the employees know what I'm talking about lol.

Any help at all is greatly appreciated, thanks.