This product seems like it's in the States right now. Look for a name change if it makes it over the border.
I hope your cats are ok now.
I use Diatomaceous Earth in the Catuary and around the doorways of the house. So far, knock on wood, it seems to be working. I also add food grade DE to the cats' food on a regular basis.
http://www.dirtworks.net/Diatomaceous-Earth.html