Mealybugs or scale crawling on orchid pots and shelf?

[euplusia]

Being insects, there are juvenile larvae = crawlers and adult stages.
Natural enemies are fine in nature, but to control an infestation with predators will not put an end to the plague.
Because of eggs and several stages of metamorphosis, insectizides have to be applied at least 3 times, after an intervall of 7-10 days. The benches and pots also must be treated. In the past we treated the greenhouse with poisonous smoke. If you grow indoors, best is to move the plant to another distant place after your first treatment.