That won't work.
If the sanitizer kills 99.99% of the bacteria, 0.01% will still remain. Right?
But with another drop, you would think that it takes out the 0.01%, when it actually doesn't. It takes out 99.99% of the 0.01%, so 0,00009999%. And so on!
That one part of the bacteria is so powerful that it cannot be stopped no matter what! It has an immune system that we could only imagine!
ALL HAIL THE 0.01%!!!!