Can termites eat concrete?

No. They can damage poor concrete and may sometimes be able to widen a crack or gap, but in general they will leave concrete alone. See also here

Is product X better than product Y?

Apart from the things that look too-good-to-be-true, like weird ultrasonic and electronic termite repellers, just about any termite product you’re offered that has some sort of government approval or label …

Repairs first or termites first?

Should we demolish part of the house that’s got termites in it? First up, the answer depends on what type of termites are creating the problem. If they are drywood …