I have a Maple tree I love it, it brings lots of shade and is the only really big tree in my Yard. Recently my seven year old son and his friend took an axe to the tree. They took about 10 swings one on one side one on the other the hits are no more then 2 inches deep each site is about the size of a coffee saucer... Anything I should do? (I mean to the tree my son well I know what to do with him!!) Can this kill the tree? I think its about 30 years old and somewhat healthy..