Do they allow dumping of mattress and box spring??

Whats the sur-charge for the mattresses?

We take mattresses from residents at no charge. Box springs would have a charge. Businesses would pay for both.

Yes, mattresses are accepted at that site with a surcharge.

I'm pretty sure they do, they used to, but there used to be a surcharge to do it, but calling them might be advisable before heading that way