Junk mail is still a serious problem that many homeowners face every day. One way to cut back on junk mail is to make sure your home phone number is private and not listed in a phone book or online phone directory. Having a public number means your home address is also public information. Be cautious when signing agreements or contracts -- read the fine print and make sure there is no mention of allowing a third party to use your address for marketing or sales purposes. When you do get junk mail, cross out your address and write "return to sender" before sending it back.