Dell Printer Software Scrub Tool?

I uninstalled my Dell A920 software via Control Panel because it was no longer useable and I then installed an HP as a replacement.  The Staples Salesrep told me if you have any problems printing with the new printer it will likely be a conflict with remaining Dell printer software.  He told me to check the Dell site for a "Dell Printer Scrub".  I tried to find it but couldn't.  Does anyone know where to find the Dell Printer Software Scrub Tool?