看pest control是用一种gel, 涂在sink下面，可以驱除蟑螂，将近一年都不会有蟑螂，谁知道那是什么胶吗？
Best roach killer overall: Ortho Home Defense Insect Killer, $7.62 on Amazon
Use Ortho Home Defense Insect Killer around the periphery of your house every few months, and roaches stand little chance of breaching its interior.
Best contact spray roach killer: Raid's Ant & Roach Killer Insecticide Spray,$9.99 on Amazon
When you're coming face to face with roaches, Raid Ant & Roach Killer is an on-the-spot spray that will make short work of your adversaries — at least the ones you can see.
Best gel roach killer: Advion Cockroach Gel Bait,$29.89 on Amazon
Advion Cockroach Gel Bait applies invisibly wherever you need it and then makes its way back to the nest to wreak havoc.
Best roach trap: Black Flag Roach Motel Insect Trap, $2.97 on Amazon
The Black Flag Roach Motel Insect Trap kills cockroaches and keeps the dead ones contained and out of sight.
Best roach bait: Combat Max 12-Month Roach-Killing Bait, $10.95 on Amazon
Common, small roaches don't require anything too pernicious, and Combat Max 12-Month Bait Stations are plenty effective and discreet.
Ortho Home Defense Insect Killer挺好