Rubbing alcohol in a spray bottle works well. This way, the tool is not touched. The dip method is a bit older, (we used it on utters) the down fall is that you often touch the plants with the pruning tool in more places than just the cutting edges. These often brush the container you dip into, thus cross contaminating. Spray bottle allows you to mist the entire tool along with your gloves and hands if need be.I thought it was harder on a tree to prune it when it wasn't dormant. So I guess I just did it at the wrong time? Each cut? Wow. How do you sterilize them; just dip in IPA? Or do you flame them before the alcohol evaporates?
And if spores are always present, do I need some type of curative spray?
Dry gas fuel treatment and rubbing alcohol are the two I used, depending which was cheaper. that day. Denatured is better.