I have a Schultz Insect Spray for Indoor/Outdoor insect spray. It's #1 ingredient is Pyrethrin, right afterwards are Piperonyl Butoxide, and "other ingredients" (99.9%).
I have an infestation of SOMETHING. For a very long while I ignored them as they appeared to be springtails and harmless. However, today I noticed my P. Moreansis with little nibble marks on it AGAIN, as well as the ping strikes I put in my prop chamber having the same bite marks.
The bugs are everywhere, in all my pots, but I mostly see them in the prop chamber.
I don't have Neem Oil locally, so this is probably the best I can get without ordering online. I have given them a quick spirts after noticing the bite marks and that the P. x 'Titan' pullings I embedded in the prop chamber soil have huge chunks out of them now.
Edit: Here are some example leaves from earlier this year: