Are there any particular places where I may not carry pepper spray?

I understand that the pepper sprays are legal in the United States. Are there any particular places where I may not carry them?
-Alex

You are not allowed to carry pepper spray on board of a commercial aircraft.
This is a Federal crime that can carry up to a $25,000 dollar fine.

Although there are no laws that we are aware of, you should use your common sense.

It is ok to carry pepper spray in your checked baggage although it is highly advisable that you notify the ticketing agent when you check your baggage to prevent any misunderstanding.

Since 9/11/2001 you might get asked questions when carrying pepper spray into Federal and State buildings or anyplace where you pass through a security checkpoint.