Are termite shelter tubes on joists a deal breaker?

[Chad Mitchell]

Hi,

First-time homebuyer -  I just had my first offer accepted for a fourplex. The home inspection is next week, but my agent sent me notes from a previous report showing that there were "termite shelter tubes in the joists." The seller was asked to treat for termites (~$800 - $900).

During our showing, I noticed that the floor was weak in some spots in one room, but not in the others. In general, are termites a deal breaker? Is there a process that I can take to evaluate if I should move forward with the purchase?