As I understand it, Daemon Tools carries SaveNow and WhenU adware/spyware payloads. The normal version presents the user with the option to disable these components during install, but once the trial period expires the user must choose to uninstall Daemon Tools, pay for the software, or accept the adware (along with some arbitrary limitations built into Daemon Tools). An alternative is to use Daemon Tools Lite, a less capable version which automatically installs SaveNow and WhenU (no option to disable) and will intermittently attempt to force install the Daemon Toolbar (which carries its own malware problems), but is available as unlimited-duration freeware.
Using malware-killers is largely ineffective; Daemon simply will not operate when the adware is circumvented or prevented from successfully running. Worse, the adware itself will intermittently attempt to (siliently) install more affiliated malware after a while, some of which can be quite aggressive and undesirable.
Older (clean) versions of Daemon Tools, which can be found here, could be used but aren't as compatible and well-supported as recent versions.
As fine a product as Daemon Tools might be, and as much as I support software authors being able to make a living from their craft, I'm still personally inclined to take a dim view of any software author/company that attempts to extort or make a few bucks from the end-user using malware methods. Malware is as vile as herpes, I don't want any part of it and will simply steer clear of any software which appears unhygienic or infected. Sorry, but if the developers want my respect then they'd better clean up their act. There's plenty of free alternatives, and there's plenty of commercial alternatives which appear to offer similar or superior capabilities for much the same price.