No, those are not environmentally-friendly hockey pucks, and they're also not unfrosted Hostess cupcakes. What they are is something that over eighty percent of Americans already have in their home, but usually just throw away instead of using it for another purpose.

It's not poisonous, it's generally safe around children and pets (as long as you're careful not to let them consume it), and it really smells good in addition to offering you the chance to spend some evenings on your patio or deck without fear of being drained of your body's blood supply by these nasty little things:

Getty Images
Getty Images
coffee grounds on white background
Mosquitoes hate this stuff. I mean really hate it. (Getty Images)

A Cup Of Coffee Is Great For Keeping Yourself Alert, And Using The Coffee Grounds Can Help Keep You From Being Attacked By Mosquitoes While You Enjoy Your Caffeine Buzz

Coffee grounds also work well on repelling other outdoor nuisances like ants, wasps, fleas, bees, and many other annoying creatures found around your home. In fact, the smell of coffee can also help repel mice and other rodents.

Why are coffee grounds so effective?

The coffee scent is strong, and it's a fragrance that mosquitoes and the other pests just cannot stand to be around. The scent masks the other scents that normally attract these bugs, and for some reason, it also affects their ability to reproduce.

Top view close-up of grinded coffee beans
Some of this...(Getty Images)
Dengue fever vector, mosquito biting hand.
...can keep some of this from happening. (Getty Images)

Here's What You Do With Your Coffee Grounds To Protect The Patio Or Deck At Your Place

You can do several things with coffee grounds to use them as an insect repellent, but according to several sources I checked, the most effective way is to burn the coffee grounds to create your own patio/deck fogger. Here's how:

  • After brewing your coffee, dump the grounds into a foil-lined bowl and wait for the coffee grounds to fully dry out.
  • Once dry, take the coffee grounds outside to an area where you know mosquitoes hang around, and make sure you've got a level spot in which to place the bowl of coffee grounds. Be certain it's someplace that you, the kids, or your pets won't knock it over.
  • This is the part you should be careful doing: add a small dash of lighter fluid to the coffee grounds and give it 30 seconds to a minute to soak in.
  • Next, light it up. You should see the lighter fluid burn off and leave you with a small bit of smoke coming off the coffee grounds. You've just made a very effective bug repellent.
  • Be careful not to do this when it's windy, and make sure you extinguish everything before leaving the area.

You can also spread (unlit) coffee grounds in the yard where pests congregate, or keep plenty of it around your patio/deck areas in bowls or cups to keep the coffee scent flowing. Here's a quick tutorial on how to burn coffee grounds to use as a fogger:

Plant Some Of These In Your Garden to Keep Mosquitoes Away

As we previously told you, mosquitoes are the most dangerous creatures on earth. If you want to keep them away from you're yard, these plants can help!

Gallery Credit: Michelle Heart

More From WROK 1440 AM / 96.1 FM