Carpenter Bees questions

[Nina M.]

Hi BP!

Some carpenter bees made sawdust and holes on my front porch. It's been taken care of. See the pictures. My PM told me the white stuff is the Trie-Die Chemical and it will not stain. As soon as the contractor sprayed it, the bees came out and died. My questions are:

• I was told there's no warranty for the job like this. The treatment can last 30 - 45 days. Is it true?
• Should I repaint my front porch? Seems the carpenter bees don't like paint.
• Can anyone recommend a good general contractor and a good PM in Columbia, SC?

Thank you so much!