Its not an Exploit it more of a Guide but since its not intended it fits better in the Exploit section than under guides.
Get yourself a spy toon. Camo should be around 450.
Expertise go for Rapid Concealment and Smoke Screen and for Noxious Traps, Deedly Toxins and Crippling Traps.
75 points on Camo and the rest to what you like.
Use smoke bomb to cloak.....walk up to a krayt and just hit em with your Venomous Ploy Traps using a macro. Pause timing should be around 16 seconds.
Will take a bit but works.
This will be fixed soon so go for it.