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How to Rid a Mailbox of Slugs

By Stephanie Rempe
Slugs are common in moist garden areas around the home.
garden slug image by Julianna Olah from Fotolia.com

In gardens and around homes with leafy plants that are watered regularly, the appearance of slugs is common occurrence. These slimy pests find their way among porches, along sidewalks and even into mailboxes. Aside from manually removing the creatures each day, you may use a few other natural deterrents to keep them out of a mailbox.

Clear the area around the mailbox of leafy green plants attractive to slugs.
mailbox image by palms from Fotolia.com

Remove any foliage growing up the mailbox post and around the mailbox. Slugs eat tender leaf plants; removal of their food source helps to keep them out of the area.

Place two 3-inch-long pieces of plastic tubing inside the mailbox. Overnight the slugs may move inside the tubing. Early in the morning remove the tubing and shake it over a bucket of soapy water until any slugs inside the tubing fall into the water.

Draw a thick line using sidewalk chalk around the pole on which the mailbox is mounted. The website Pest Control Options asserts that slugs will not typically cross over the line of chalk. Sidewalk chalk can be found at craft and hobby stores.

Use sidewalk chalk to create a barrier around the pole on which the mailbox is mounted.
sidewalk chalk image by Jeffrey Sinnock from Fotolia.com

Sprinkle table salt on the slugs. The salt will eliminate the slugs on contact by drying out the slug's body.

Table salt destroys slugs on contact.
Salt Shaker on Table- Portrait image by kellykramer from Fotolia.com

Spread a layer of lava rocks around the base of the mailbox post. According to Eartheasy, the coarse surface of the lava rocks deters the slugs from climbing over them.


Things You Will Need

  • Beer
  • 2 pieces of plastic tubing, 3 inches in length
  • Bucket of soapy water
  • Sidewalk chalk
  • Salt
  • Lava rock


  • Spread lava rocks around the mailbox much as you would apply mulch. The rocks provide decoration while deterring slugs.
  • Leave a note for the mail carrier explaining anything left in the mailbox. Put nothing in the mailbox that will interfere with delivery of mail.

About the Author


After attending the University of Missouri St. Louis, Stephanie Rempe worked as a documentation manager in the finance industry 10 years before turning to her first love, writing, which she's been doing professionally since 2008. She currently divides her time between Missouri and her fiance's hometown in Oregon. In addition to her freelance writing, Rempe is working on a romance novel and short stories.