John
I would do what Paul said but I would take an additonal step of capping the sprinkler heads where they are easy to get to with a half dozen of 1/2" PVC caps. Then you are increasing the pressure ... read more
John,
When you see the wasps around, look at the exterior of the chimney and possibly from a ladder.
What you may see is that they are not coming down into the chimney through the top or chimney termi ... read more