Where can I find liquid latex or spirit gum?

I'm about to film a very low budget short film involving zombies, and I've found several websites that tell me to use liquid latex or spirit gum as an adhesive for more 3D make-up. But I dont know where to look to buy the stuff! I went to a party store, lincraft, etc. but they had no idea... the only place i know of for liquid latex is an a store, but i'm just looking for the clear stuff, and i'm not sure they'd have that. Alternatively, I could use 3D gel, but I dont know where to get that either.. I live in Melbourne btw. Any help would be GREATLY appreciated. Thanks.