You guessed right!
I actually just started my PhD in plant-insect-pathogen interactions a month ago. Did my Master here before and worked as a research assistant before getting the position.
This thread should will tell you about Superthrive and KLN, and on page 2 there's a graph with what's in each product. I have not had any luck finding other liquid rooting hormones, either here or in France. But I do fine without them for now.
http://www.orchidboard.com/community...perthrive.html
Listerine is an antimicrobial, and it works really well if you have plants that show some spots from fungus, spots of rot, or to spray the roots when repotting after root rot. The original brown listerine is known to be safe for orchids.
Systemic insectide means that the insecticide is taken up into the plant's vascular tissue and it is carried off to all parts of the plants and insects are killed via ingestion. It's not just for luizen and witte vlieg, it works against other insects as well. Very good against mealies if you add a few drops of dish soap to it to improve the contact effect (ie, kills insect simply through contact with it too)
EDIT: forgot to add the link to the thread!