Pure gold it is.. Hilarious suggestions!

On a serious note though, here are two ways which generally work for me:
1. Sugar and baking soda can work wonders. Make a mixture of this using equal parts of the two items and sprinkle this near the cockroach-infested areas at your place. The cockroaches will inevitably end up feeding on this mixture and will die when the baking soda reacts with the stomach acid present in the roach itself.
2. Ammonia solution is another option. Add 2 to 2 and a half cups of ammonia to a bucket of water and flush it through your kitchen sink and bathroom outlet once every fortnight. The pungent smell will more likely than not keep away the pests.