Guardio's premium membership includes Real-Time Protection. With Real-Time protection, there is no need to run scans manually.
When activating your premium membership, Guardio runs the initial scan and fix. From that time on, Guardio works in real-time 24/7. With the live browser protection, it'll stop annoying popups, protect you from phishing & other scams, remove and prevent malicious browser extensions and browser hijackers, and block malicious websites from harming you. It'll also scour the deep web for signs that your accounts have been involved in a data breach so that you can take action to protect your accounts before hackers can take over your accounts or commit identity theft.
Note: Free users have access to On-Demand Scan.