What is best way to keep wasps from building nests in my wood deck?

https://www.hunker.com/12436884/how-to-keep-a-wasp-from-nesting-on-a-wood-deck

Here you go!

http://homeguides.sfgate.com/keep-wasp-nesting-wood-deck-35186.html

Fake them out...put up a fake wasp nest to establish territory(avaisble in dome garden catalogs and on internet)

Go to the dollar store and buy a paper "wasp nest" wasps are very territorial and if they see a nest they won't come near your area.

A brown paper bag with the top twisted and tied will appear to be a wasp hang it any where you don't want wadps

Here are a few natural insect repellent recipes: Organic Garden Pest Control Recipe #1 1 head of garlic 1 tablespoon dish soap (Note: do not use a dish soap that contains bleach) 2 tablespoons mineral or vegetable oil 2 cups water Peel the garlic cloves and puree the cloves along with the oil and water. Allow to sit over night and then strain the mixture. Add the soap and mix toughly. Pour into a spray bottle and use on pest infected plants. Organic Garden Pest Control Recipe #2 1 tablespoon vegetable oil 2 tablespoons baking soda 1 teaspoon dish soap or Murphy Oil (Note: do not use a dish soap that contains bleach) 2 quart of water Combine ingredients and pour into a spray bottle. Use this organic bug spray for plants on your affected plants. Organic Garden Pest Control Recipe #3 1/2 cup chopped hot peppers (the hotter the better) 2 cups water 2 tablespoons dish soap (Note: do not use a dish soap that contains bleach) Puree peppers and water. Let sit overnight. Strain carefully (this will burn your skin) and mix in dish soap. Pour into a spray bottle and spray this organic bug spray for plants on your buggy plants. Natural home pesticides are exactly like chemical pesticides in one very important way. Organic bug spray for plants will kill any bug in comes in contact with, whether a pest bug or a beneficial bug. It is always best before mixing up any natural insect repellent recipes to think hard how much damage pests are really doing to your garden. You may be doing more damage to your plants by killing the bugs than the bugs were doing to your plants. BEFORE USING ANY HOMEMADE MIX: It should be noted that anytime you use a home mix, you should always test it out on a small portion of the plant first to make sure that it will not harm the plant. Also, avoid using any bleach-based soaps or detergents on plants since this can be harmful to them. In addition, it is important that a home mixture never be applied to any plant on a hot or bright sunny day, as this will quickly lead to burning of the plant and its ultimate death

hang a fake one up. You can purchase them for about 12 bucks. They work because wasps are territorial and will not share space when they see another established nest.

I saw the fake ones in packages of two at Bed, Bath & Beyond: Get Lost Wasp for $9.99, don't forget to use one of BB&B's coupons.