How do you make bug spray?

Dish-washing (not dishwasher) detergent and wateris an effective bug spray.

Specifically, it is available for purchase as insecticidal soap. But it also may be made at home. The amount of detergent to water depends upon the ultimate potency that is being sought. It is a particularly safe option for controlling soft-bodied insects - such as gnats and mosquitoes - that haunt residential lawns and Swimming Pools.