Sanitation is very important, some people would argue that it is the cornerstone of modern society and the sole reason that life-expectancy rates went up so high. I mean, it wasn't really like a huge technological advent, more like using common sense. In the Civil War era for example, amputations would sometimes be conducted with the same saw that had just been used to remove a gangranous leg without so much as even a wash. Go back further in time and you see people realizing that, "Hey, if we don't just throw our waste out of the window onto the street where we walk in it, we don't get sick." I mean the bubonic plague was so virulant basically beacuse people couldn't figure out proper ways to dispose of the dead.
Hot soapy water was probably responsible for saving more lives than the invention of penicilin wound up saving. Now adays we have all sorts of chemical sanitizers, but what has really improved health even more these days is the use of disposable items. You'd never see a modern hospital attempt to wash a scalpel or syringe, yet at one point in time or the other these devices were in fact meant to be multi-use. Doctors have realized that trying to A) Kill germs and B) Ward off contamination is about futile so the best thing to do is to have a tool in a sealed package and then simply throw it away after it is used.
So given all that I tend to think about the fact that people eat off their dishes all the time, wash them with hot soapy water, and are fine. I don't perform surgery with my knife so I don't really need to worry about sanitizing it in order to not spread infectious disease, so beyond that I don't think anything more than soap and water is needed. Sure we have a lot of technological advances in the field of kiling germs, but soap has a pretty good track record for just general use.
The few times I have used a blade to say, get a splinter out or something of that nature where it's going to be cutting my skin I use alochol and then lick the blade with flame from a lighter. I don't really know how effective that is, but I've never got an infection from a cut or anything so I guess it works.