Are incinerator legal?

Federal law, which trumps state law, says no. So if your state allows it, that doesn't matter, the country does not.

There is no such thing as legal weed in the United States. There are state regulations that allow medical marijuana but on a federal level it is still a crime.

If you are referring to asking questions, then it is legal. I don't know exactly what you mean.

PCP is illegal

Stating it doesn't necessarily make it so. Many websites will tell half truths or outright lies, to get you to buy products which may exist in legal grey areas, or totally illegal in certain...