Re: detect unused objects in SRX Firewall

If you can get a demo copy and have a VM infrastructure, then Junos Space Security director would be able to help.  You can search object usage once devices are imported to see where they are in configurations.

http://www.juniper.net/techpubs/en_US/junos-space14.1/information-products/pathway-pages/junos-space-security-director-pwp.html