Hello, I have a very large pine tree in my front yard which looked like it died over the winter (needles at top are brown) today I noticed that his neighbor also is getting this way and that there is yellowish shavings like sawdust at his base. Do you think we have termintes? I know I am going to have to have both removed - but do to their size I was waiting - it would cost about 400$ each. They are that big.