Yep. Santa Clarita is providing the material San Francisco's "homeless" problem.
The construction material, I mean. Not the "homeless" themselves. At least, not that I know of, anyway.
I understand the Streets of San Francisco get washed down with bleach. Keeps the HepC and TB down for the tourist trade.
Dang. What's 'down'? One case in every 25? The Taliban would be happy...
There is an old man in my town whom patented a tongue and groove plastic milk-bottle back in the 60's. He actually built a house out the interlocked bottles.