Air, base, and asphalt mat temperatures can be the key to successful compaction and building a reputation for laying down high-quality, long-lasting paving or patching job. Tom McDonald.
We just moved into our first house and got something in the mail from the previous owners tree spraying service. It outlines what the previous owner had done every year from May through September....spraying for caterpillars, inch worms, aphids, ticks, bees etc. The total cost is about $1,000.
You spray the tree while it is dormant-late March. You should be good until July-August. The cost of the sprayer and spray is about $50. The spray should be enough for 5 years. Unless, the bees decide to make the tree their home, I'd say don't kill them, they help with the pollination.