if you had a virus before u installed webfoot will it remove it from mac

Hello and Welcome to the Webroot Community!
 
Yes in most cases it will and if you have a active subscription you can Submit a Support Ticket and one of Webroot's Threat Researchers can look and make sure your malware free! http://www.brightcloud.com/platform/webroot-intelligence-network.php and a Mac the best person to ask would be Webroot's own Mac Threat Expert @ 
 
Thanks,
 
Daniel ;)
 

Hello,
Yes we will remove the threat even if it was installed prior to us being on the mac.  If for any reason that it is not being removed then let me know and I will look into it personally for you.  I hope that you enjoy our software on your mac and I would love your feedback about it.
Thanks,