Purely from a toxicological perspective, dosage is everything (for a given agent, of course). A very common way to express the risk of a toxic substance is in terms of a “dose-response curve,” which might allow you to read off, for example, for a dosage of $d$d micrograms per kilogram of body mass, the probability of experiencing a given threshold toxic effect is $p$p.
Analogously, when decontaminating, the keys are concentration (of your sanitizing substance) and… critically! … contact time. You have to give a decontaminant the chance to work its damage on the bad bugs, to accomplish things like denaturing their proteins and breaking their chemical bonds. Microbes have evolved to withstand some pretty rude affronts, so a quick “spray on and wipe off” is very seldom an effective technique.
If your intent is merely to remove contaminants, rather than to destroy them, then you care far less about contact time and more about the specific chemical interaction of the cleaning substance your using to dislodge and wash away the bugs.