Create your own trap by applying petroleum jelly on the inner walls of a container with steep sides.
把凡士林涂抹在一个杯壁陡的容器的内表面，这样你就自制了一个陷阱。
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The Petroleum Jelly Trap: This method is more practical if you only come across a cockroach once or twice a week, and if you’re dealing with a small colony somewhere around your house.
By using of modern seismic network and paleo seismic data, combining seismic geology and petroleum geology, the purpose of finding seismic source trap may be achieved.