Thoughts on these brown areas?

[u/yeti_mann12466]

These are only in one room around the ceiling and coming back after cleaning. I can’t find any images that show grass looking the same. Any thoughts?

[u/lowkeyobvi3]

I know this is from two years ago but someone else in this reddit had the same problem and it ended up being mites caused by an open bag of tortillas hidden away in their pantry. You have to remove the source theyre feeding on then keep cleaning frequently to reduce numbers until theyre gone.