Let’s talk about science, according to the Center for Disease Control

“How long does the Hepatitis C virus survive outside the body?

The Hepatitis C virus can survive outside the body at room temperature, on environmental surfaces, for at least 16 hours but no longer than 4 days.

HIV does not survive long outside the human body (such as on surfaces), and it cannot reproduce. It is not spread by

Air or water.
Insects, including mosquitoes or ticks.
Saliva, tears, or sweat. There is no documented case of HIV being transmitted by spitting.
Casual contact like shaking hands or sharing dishes.
Closed-mouth or “social” kissing
Toilet seats.”

I couldn’t find the source doc, but as I remember in order for HIV to remain viable outside of the human body the infected blood must remain moist and its life span was still only hours. So if you are using floggers on multiple partners, the wipe them down and let them dry for a couple of days will ensure that the two nastiest bugs are dead. I seriously doubt that folks using the same floggers on different people during the same session will take time out to clean their instruments, for them I recommend fluid bonding. I for one rarely draw blood with my floggers (I have other toys that are much more fun for that). Remember most of the myths about HIV and how it spreads are from the bad old days when it was the boogie man and we had no knowledge in regards to methods of transmission. When all else fails fall back on science.

Just my 2 cents.