[header] How to trap cockroaches [title] Try making a duct tape trap. [step] The premise of this strategy is simple: you'll need bait to attract the cockroaches, and adhesive to keep them there. This trap can be difficult to move once you have set it, but it is a simple trick, and you may yield a high reward for relatively little effort. 
[substeps] You can also find adhesive-based traps, if you prefer to buy them. Look at home-and-garden stores, or ask your local exterminators for advice.