I used neem oil spray on a succulent that had mealybugs. 5 days later, This fuzzy, stringy white mold appeared all over the soil. It stunk, and I hated it. I sprayed the mold with neem oil, and the next day there was more. The succulent died because of the mold 3 days later so I got rid of it. I thought, "end of the mold, right? Whew." Well, I was wrong. 8 days later, tiny bits of the same mold started appearing on another succulent that was healthy and never had mealybugs. The succulent was about 5 feet away from the one that first had mold, and it was on a different surface, which was 3 feet lower than the one that first had the mold. The succulent was healthy, and it was not over-watered. When the mold first appeared on this second succulent, the soil was completely dry, so I'm not sure why the mold is there. 3 days later, I saw the mold again on another succulent that was right next to (but in a different pot) the succulent with mold right now (the second one to be spotted with mold). I was about to go nuts. That succulent also was healthy and had not even bee sprayed with neem oil, so that must not have been the cause. it was also dry soil when the mold appeared, same as the other one. I have not watered either succulents in 14 days, which is before I saw the mold. In other words, I have not watered the succulents at all since even before the mold appeared. These succulents have not had any previous issues. There was 6 other healthy succulents each in separate pots next to those two, so I immediately separated the two infected succulents. Why is it there, will is spread to my other healthy succulents, and most importantly: How do I get rid of them? All of these succulents are not over-watered and are houseplants, in my house. I tried neem oil but that made it worse. I need a solution that doesn't involve destroying and/or getting rid of the plants, and that does not involve re-potting the soil, since that hasn't shown to do anything. I need a way to kill it permanently without harming the plant and that will work near-instantly, because this mold has shown to kill my succulents in 2-5 days.
Warning!: The following images are extremely gross and may leave viewers discomforted or grossed-out. Please refrain from viewing the following if you are sensitive to these gross things:
The white dots that are slightly ovular in those images are parts of the mold. I don't know what part or what it is for, but I know it is the mold because they weren't there before.. ...and what in the world or the white dots? It really yucks-up the whole scene. It also makes the mold look more hazardous to the plant. Are these germination bulbs or something that generate spores? Or is this the mold anamorphing?