free strong boxes (central-east Phoenix)

I've noticed this grouping of boxes out in the usual bulk trash pickup area of one of my neighbors - but our bulk trash pickup isn't scheduled for quite some time yet.
They all look strong; there are several approx.
22" x 16" x 2", a couple which are narrow but long and one really big one.
If someone doesn't go get them soon the rain will ruin them.
They are on 28th Place two blocks south of Oak, on the west side of the road before it turns into Palm Lane.
I know they're set out as trash because there's a piece of a cabinet door there also, and these boxes have been sitting there for days.