It depends on which state you are living, e.g. In Australia you're not allowed, as for the other state, check wikipedia.
In the UK you need a licence to own a shotgun,
Yes you need a valid state license to purchase any guns.
No.
As long as you meet the minimum age requirements and are not criminally prohibited, no license is required for a shotgun.
To check the license of the house cleaners you need their identity numbers . Once you are logged into their website, you can check the license number of the house cleaners.
A sellers license
Depends on where you live. Your spelling of licence may indicate that you are in Great Britain, which DOES require a license. In most of the United States- no.
yes
Only NFA regulated items. For a typical rifle or shotgun, no.
It depends on where you are. In most U.S. states, you do not have to have a license.
yes
You need a license or permit to run a haunted house. If it is in your own home, check your local laws to see if a permit is required.Mostly, license are not needed if your haunted house is taking place in your own house.Howvere, to be on the safe side you should check with your local town council.