Anyone else have a layer of this sand (or whatever it is) all over the outside of your house?

I have been at this home for 4 years and in Miami for almost 10 and have no memory of anything like this happening. It's everywhere and I checked a few neighbors trash cans in the front and they all have it near me. I tried to upload a photo but it kept failing. It's like sand granulas everywhere outside. On every flat surface.

My first thought was bruja activity and that it was salt or chlorine for the pool. I didn't taste it so might be something other than sand. I considered construction but the closest job to me is around 8 properties away and it's all over my street so I don't think that's it.