Advice on Termite Damage

[Hayes Eiford]

We are currently remodeling a home and have discovered termite damage. What do I need to know about termites? It seems the structure is sound but it is obvious that there is history of termites and some damage to the studs. I have a termite bond but it only covers active termite damage and we haven’t seen any active termites. Any help or advice would be appreciated!