Coffee grounds do not effectively repel termites or provide any reliable protection against a termite infestation in a home or structure. While some popular gardening myths suggest that spreading spent coffee grounds around a foundation or mixing them into soil can deter various common pests like ants or slugs, they have no proven deterrent or toxic effect on subterranean or drywood termites. Termites tunnel through soil and wood driven by powerful instincts to find cellulose food sources, and coffee grounds will neither kill them nor stop them from foraging. Relying on coffee grounds for pest control leaves wooden structures entirely vulnerable to severe, unchecked termite damage.
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