Termite Frass
We’d definitely be alarmed by this sight in our kitchen cupboard. Our cupboards shouldn’t contain anything that isn’t food. Especially not insects or termites! The first time they found these mysterious white dots in their kitchen cabinet, they simply cleaned it out – no muss, no fuss (and no frass). However, when it reappeared, they had to know what they were dealing with.
Reddit users were just as alarmed as this person, and suggested he called pest control asap. According to them, this white substance was frass – waste of perforated wood created by insects, often termites, gnawing at the wood. If you see this white substance in your cupboards, and it reappears after cleaning – call pest control without wasting time.