Updated: Feb 24
Termites can't and don't eat concrete. Concrete do not contain cellulose that termites are after like in the wood.
Having said that, it doesn't mean termites cannot go through concrete cracks to reach their food source.
Termites only need any opening as slim and thin as a business card and they will go through and reach their source of wood.
Concrete cracks occur due to expansion during heat and shrinkage. This is a normal building occurrence
To sum it up. Termite do not eat concrete but they can go through the concrete cracks to reach their food source.
The most appropriate line of action to mitigate termite through concrete would be dusting: www.youtube.com/watch?v=zEzLdPP3GhU&t=5s.
Combination of methods would give the owners the best result.
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