This page should help you all remove the online Surveys Virus from your browser.
I specialise in the removal of Virii/Malware/Rootkits etc incase you are wondering.
Checked your link, started out a bit unconvinced about one of your recommendations- specifically Zemana but it seems legit.
Ive run it a few times in a few different scenarios, seems fairly light on resources but its finding most stuff.
Any specific reason for recommending it? Im a malware-bytes guy usually but the last couple of updates have been a bit rubbish so an alternative would be welcome...