Yes...you can give them away with a bed but NOT sell just the mattress
Absolutely. As long as you don't represent the mattress as being new it is most certainly legal to sell a used mattress.
Yes.
yes...
yep
yes
Yes
It's legal, but most people will not want to buy it.
Yes you can sell a used mattress is Washington State as long as the owner knows that it was used. No Retailer's can sell a used mattress. Outlet stores can not sell a used mattress unless the buyer is told by the seller that it was used.
In Maryland, it is legal to sell a used mattress as long as it meets certain requirements. The mattress must be sanitized and labeled as either "used" or "secondhand." Additionally, the seller must provide a receipt with the date of sale, seller's name, and address. Failure to comply with these regulations may result in fines or penalties.
No, but you can sell the sheets or whatever and toss a mattress in for free...
It IS illegal to sell a used mattress in Australia now, due to Health Regulations