How do I trap drunkard gnats?
No matter how hard I try to keep my drains clear of food scraps, I always seem to get drunkard gnats. Several years ago, someone told me to mix dish detergent and vinegar in a small jar with holes in the cap to keep above the sink. I make a solution every spring. Sometimes it works, sometimes not. What is the proper proportions of vinegar and detergent to assure the trap works?