Hello!! Horticultural disease lady here: another super good way to get rid of mealy bugs and scale insects organically is 3% strength hydrogen peroxide mixed with an equal amount of filtered or distilled water (distilled is best!) Simply put it in a spray bottle and spray the ever loving crap out of the leaves (and their undersides!) and make sure you spray the top part of new soil. Like with the alcohol solution, it’s best to move plants out of any direct or bright areas to avoid burns.
Thanks for the tips! Now go forth my friends and murder the mealies! ⚔️