How do we get rid of gnats in our house?

Clean it and protect it. Anything is prone to infestation.
good luck
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6 Ways to Instantly Get Rid of Gnats at Home - Organic Lesson

www.organiclesson.com/6-ways-to-instantly-get-rid-of-gnats-at-home/
Preventing Gnats in the Future. Clean Up Dirty Dishes. Make sure there aren't any dirty dishes lying around in the sink. Cover & Get Rid of Trash bags. Make sure your trash cans are well covered. Get Rid of Damp areas. Change pot soil.

If working with pets, check with your local pet store (i.e. Petco) for a safe household fogger.

You may wish to try some safe methods as described here: http://www.wikihow.com/Get-Rid-of-Gnat

home depot or lowes has traps that will get rid of fruit flys and gnats

Hello, Here is website for 6 remedies on how to get rid of gnats in the house. How to Use Home Remedies to Get Rid of Gnats

I like to use natural remedy's. here is a link for you to look over.
Natural Remedies to Spray Kill Gnats on Plants

Get rid of all the fruit in the kitchen....

• Clean up the living area where the gnats are hanging around. This is usually the kitchen .Take away all garbage, clean the sink disposal, and throw away any food residue.
  

• 2

  Spray the counters with a cleaner that contains bleach to discourage gnats. Dry off the counters with paper towels.
  

• • 3
  • Find out where the gnats are getting into the house. If there are cracks around windows or doors bass seal them. Fix any window or door screens.

Elimination

• 4

  Pour a cup of ammonia down your sink drains and disposal to coat the inside. Gnats inside the drains will quickly die.
  

• 5

  Mix together equal parts apple cider vinegar and dish detergent.
  

• 6

  Pour the mixture into small dishes or cups and set them out in the areas where gnats congregate. The gnats will be attracted to the sweetness of the vinegar but will get caught and die in the dish soap.
  

Prevention

• 7

  Keep trash cans covered at all times, and empty them every night.
  

• 8

  Leave your compost buckets outside. Gnats love vegetables and fruits.
  

• 9

  Avoid over watering your plants. Soggy soil attracts gnats
  

Vinegar can be used to get rid of gnats in the form of a vinegar trap. Vinegar traps are easy to make and can be used throughout the home, although they work best near areas where gnats feed and breed. To make a vinegar trap, simple take a bottle or jar with a large opening and fill it with vinegar (preferably white vinegar). Cover the trap, and cut a few small holes into the lid. The vinegar traps will attract the gnats. They are able to crawl into the trap but not make their way back out.
Another method for using vinegar to get rid of gnats is an alternative vinegar trap. This homemade insect trap is simple. Take a bowel and mix a few drops of dishwashing detergent with some vinegar. The vinegar will attract the gnats, and the detergent will help trap them in the bowel.