Making a spray to deal with insects can take care of the problem. This guide is about homemade bug spray.
Read and rate the best solutions below by giving them a "thumbs up".
I use soap to spray for insects in garden. Mix 1 tablespoon of liquid soap with water in a quart spray bottle from Dollar store. Spray once a week and after a rain.
Sitting at my desk this morning, I heard the buzz of an insect. To my dismay, a very large, wasp-like insect was buzzing between the window and the curtain. Not wanting to spray insecticide where I would be working for the next several hours, I grabbed a spray bottle of 25% vinegar/75% water that I use to spot kill weeds. It killed the critter almost instantly, and no toxins for me to breathe!
By Linda from Vista, CA
If you have to spray any type of bug spray to save or preserve your plants or flowers (inside or outside), add a few drops of Dawn dish detergent to the mixture and it will actually help the spray stick and work, instead of run off. It will keep its strength and stick better to your plants.
By David from Ellsworth, ME
Use rhubarb leaves to kill aphids. Boil three to five rhubarb leaves in one litre (one quart) of water for 30 minutes. Add a dash of dish soap or vegetable oil for sticking power and spray away.
By sooz 
If you don't have any bug spray around - try using Listerine. It kills them just as fast as the bug spray and it's not harmful to us.
By Heather S.
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Here are questions related to Homemade Bug Spray.
Do you have any natural bug spray recipes to share? Please submit them here.
By Kristeen 06/29/2008
I mixed half Listerine and half rubbing alcohol with a few drops of dish soap in a spray bottle. A few squirts on HUGE horseflies in the house and they rolled over dead!
How do I make a homemade inexpensive spray for flying insects?
By Jackolyn Smith  08/29/2014
I use a cheap can of hair spray. Spray the flying insects and it stiffens their wings so they can't fly! I use this especially on bees or wasps that get in the house. Works every time!