rkaufmann87: Be careful about sending this kind of message. There are few viruses on OS X, but they do exist. See articles like this:
http://www.digitaltrends.com/computing/can-macs-get-viruses/
The Dridex virus, does appear to be windows only. However, it would be possible for a similar virus to affect OSX. Indeed as articles like the above point out because so many OS X users think they are safe they are generally complacent and thus when a nasty virus for OS X does get out there it will probably spread very quickly.
I had a virus come in to one of my OS X environments through a word document sent to me through, what I believed was, a secure channel. It caused me some problems, although I strongly suspect that it was a virus targeted to a windows office environment and thus did not do too much damage. Nevertheless, I had to use a malware removal tool before I could use MS Office again.
I would suggest that all users (including OS X users) use a malware protection tool (aka virus scanner). Personally I use the Sophos tool which is available free and only does malware protection and does this very well. As you (rkaufmann87) point out, many of the so called "Mac cleaners" are not particularly good. However, I believe that most of the tools from the reputable malware protection companies are good and will not slow down performance too much.
I am considered a computer security expert (at least it is part of my job), I do not work for Sophos.