Others may provide different solutions(no pun intended), but here is mine. A simple 50/50 mix of rubbing alcohol and water in a regular spray bottle. I do not know if the alcohol would adversely affect you cactus. It does not hurt my aloes at all. Let's see what others say.

That's a good solution, I've used it on Hoyas as well, here is another solution per 1 gal of water add 2 tbs. soap that has coconut oil in it. This can be purchased in any Smart and Final Stores many hair shampoos has this mixture as well. Do not use detergent. Neem oil is good follow directions on bottle, or Concern products, or Safer's soap. I just want you to have some choices. Norma

It shouldn't be hard to get rid of the mealies, since you don't have a great number of cuttings to treat. I often use alcohol in such cases, sometimes even stronger than what Borrego uses. Make sure it gets down into any tight places where they might be hiding. You can also use the alcohol on a Q-tip or just use a thin toothpick to squash the bugs in hard-to-reach places. (By the way, if you use a spray in the future after your plants are out where they get the sun, never do it at a time of day when the sun will hit them while they are still wet, or they will get ugly spots burned into them.)

Thanks, for ALL of the suggestions. I was concerned that applying any kind of solution (Yes,..loved the pun..smile) to the not-rooted, yet-infested cuts,... may cause me to lose the cuttings.