Does the salvation army take mattress and box spring

If I was Salvation Army I would not take any used mattresses ever they sell brand new stuff at a good price box springs and mattresses in plastic

I don't ever recall seeing any mattress sets. Might not take them.

They they only sell new mattresses and box springs . They tend to be less expensive brands. They don't take used mattresses or box springs

Yes they do. In VERY good condition. They also sell bed frames in box.