I noticed this, this morning, by the front door...
It looks just like pepper from a pepper grinder and just outside the door, hundreds of ants. Some while ago, I spotted something similar but much more thinly distributed, on the kitchen window sill inside. It had been cleaned off a few times, but kept reappearing. I suspect that was due to ants too.
What is this material? It has not come from higher up the wall that I see, it's perfectly dry and just vacuums up.
It looks just like pepper from a pepper grinder and just outside the door, hundreds of ants. Some while ago, I spotted something similar but much more thinly distributed, on the kitchen window sill inside. It had been cleaned off a few times, but kept reappearing. I suspect that was due to ants too.
What is this material? It has not come from higher up the wall that I see, it's perfectly dry and just vacuums up.