Open the internal compartment of the couch in the specific area that was dented.

To access the internal compartment of your couch, remove any seat cushions, then locate and unzip, or detach the fabric lining underneath. If the frame has a panel, unscrew or unclip it as needed. Most compartments are underneath, so check if it lifts open.

This step may require removing the dust cloth with a pair of scissors from underneath the couch.