OSX - Problem installing Avast after removing Sophos

I have removed Sophos in order to install Avast, but when I try installing it I get a message saying it cannot install due to my having Sophos on my computer.

I was looking at other posts here on the Avast site and saw one reference that I have to delete any reference to Sophos in my filesystem; how do I get onto my filesystem?

Anything you can give to this clueless individual would be most appreciated!

Thanks!

have you checked Sophos website/forum for uninstall instructions?

I had the same problem used clean my mac2 to uninstall sophos still came up when trying to install avast. went to sophos web site downloaded the sophos uninstall app used that. used clean my mac again as there was some sophos junk still left rebooted and was ok to install avast.