I will be on a trip with my wife to the US and then head to EU for several weeks. My friends have already asked me to purchase or pick up items in the countries we visit. I'd love to do this for them, but don't want to be dealing with the baggage and items being checked at every destination.
Is there a way to certify that the items carried are risk-free, meaning no drugs, hazardous material or anything like that? Is there any service offered by a courier or some company?
How do "Air On Board Couriers" deal with this when transporting items for others, a form?
I don't want to be liable for anything that was bought and shipped to me in another country. What is the best way to certify that, whatever is there, I am no liable for?