Before you start the fight with insects in your home or on your property, you should first get acquainted with what you have in your neck of the woods. This will help you determine which ones to try and get rid of and how you should do it. If you have aphids, they'll suck the nutrients from leaves and stems while depositing disease along the way. Different types of beetles can attack everything from your asparagus to your potatoes, and slugs can wreak havoc on your lettuce. Once you know what you're up against, take a course of action appropriate to your extermination needs.