Hiya Marius,
Thank you for sharing that useful information! I have also used the same bug killer on orchids and cacti and have found it very effective against a wide range of pests
Incidentally, if you ever get mealy bugs (which look like white cotton wool) or scale insect (which look like tiny limpets attached to leaves) do use 70% Isopropanol which is available from some pharmacists and is relatively inexpensive and non-toxic.
I believe that is most important to check plants regularly for pests as when they can go unnoticed particularly in large orchid collections they can multiply rapidly and are then less easy to eradicate.