It is well known that an initial bleaching of fig twigs with a 10% bleach solution
(1 part bleach, 9 parts water), helps in controlling pathogens (against rotting) while rooting.
I have been doing that along with great success...

However, (I think that I did mention this before) while at BelleClare in 2006, and mentioning this
to Chris DePaola (a retired fig expert), he did raise an eye-brow and did mention to me of his more
aggressive spraying with a 100% bleach (straight out of the container). Cannot remember if he meant
dormant fig TREES or rooting fig TWIGS.

Sooo, what is the optimum bleach concentration?
Experimenting with rooting some NON-precious fig twigs comes to mind...

George,
I am not expert in this field but if it were me I
would use the diluted clorox as is the practice
in many restaurant kitchens.I was told by
a health inspector  once that a dilution , about the same
strength as 1 to 9 was just as potent. Again,
I am no expert but it want hurt to experiment.
Keep us posted.
I am having good luck with slightly damp SM for
rooting.I understand you like it also.
       Tom

I don't think there is any need to go higher than a 10% mix. I regularly do deodorizing and disinfecting behind wildlife in structures. I have done quite a bit of research into zoonoses (diseases which can be interspecific) and no where do I find recommendations for stronger concentrates of bleach. JMO from my reading (I am by no means an expert in microbiology) bleach is reported to be more effective as an antiviral than antibiotic and has zero effect as an ovicide (not effective against eggs ie., bayliascaris lotor[raccoon roundworm], nematodes, internal worms, etc.) as a miticide or anti parasitic again nada. I even doubt it's anti fungal properties as it is not effective against histoplasma capsulatum which is found in bat and bird guano.
Special note; never use bleach in or around bat guano as it reacts badly with the high ammonia (urine) content of bat guano and releases chlorine gas (a blood agent) into the atmosphere.

My aunt mixed bleach and ammonia and got a nasty case of chemical pneumonia from the off gassing when she tried to do some cleaning. She found out the hard way.

-Little John

I have seen numerous warnings against mixing bleach and any ammonia-bearing compound.  Chlorine gas is nasty stuff; it was one of the first war gasses used by the Germans in WWI. 
Ox

I have had much success with using Clorox disinfecting wipes. They are bleach free.

After washing my cuttings with dawn and water. I rinse, wipe dry,then use the Clorox wipes. I then set the cuttings aside to dry. Then wrap them in a damp hand towel/news paper then into plastic bag to start rooting.

You raise a good question about perhaps wrapping cuttings in disinfecting wipes for storage. I have not tried it but the idea had entered my brain each time I see the wife using the wipes on the kids' hands. That would be a neat experiment. There are so many different kinds of anti-bac and disinfecting wipes out there. Any thoughts on this from anyone else?

Leon, I had a few cuttings rooting in baggies that got mold on them even though I had cleaned them with anti-bacterial soap and bleach.  I cleaned them again, wrapped them in clean paper towels and again the mold appeared. The third time I cleaned them I put a little bleach on the new paper towels. This time the mold didn't return. I didn't keep records or put aside any without bleach soaked paper towels to compare with. Very unscientific, but the cuttings rooted without problems and no mold.

gene, i had similar experience.  i cleaned with bleach two different times, let them dry, and wrapped in a clean paper towel which was not allowed to touch anything, yet had mold return.  the third time, i dipped in bleach and immediately wrapped in paper towel - no mold next time.  in fact, i had one of those cuttings with 1/2" rootlets now, so i know it didn't affect that particular fig.