Are you still seeing a reduction in wasps? That might convince me to try borates.I agree, the article above was very helpful as I was considering adding borates. Early this week I pulled the trigger and added 25lbs of boric acid over a few day span. Based on the test strip I am somewhere between 30-50 borates; it was very simple to add and brush around the pool. I liked the price and free shipping from Duda and that they shipped in 5lb bags. My goal in adding borates was to buffer my PH due to our rock water feature and was hopeful it would mitigate our wasp problem.
I am close to a week in and we went from having countless wasps coming and going all day long for 2 years to zero wasps in the last 2 days. I am hoping this remains true because sharing the pool with wasps has been a pain.
Yes, they were coming and going continuously. Almost a month of having borates, I have seen no more than 5 wasps come to the pool in that time period. I used to have 5 wasps in 10 minutes. Well worth the expense and effort, plus I went down to 5% of my CYA for minimum FC and have zero water issues. The wife noticed how silky the water looks with the borates too!
We still get wasps and, according to the test strips, our borate level is at 50. Granted it's about 10 or so. I attached a flip-flop to the end of a 18" piece of wood and go on a "slapping" spree with a beer in one hand and the flip flop thingy in another. Must have killed a few hundred so far this year. They are the bane of our pool.