Black Pest on my Yucca I noticed these around 2 months ago, I have tried spray it down with water,using pesticides and physically cleaning it with tissues, but to no avail. What are they and what can I do to get rid of it I bought the plant approx a year back, it is near a south facing window, it does not get direct sunlight most of the year Originally by u/llwulfricll on Reddit: https://tinyurl.com/2bhxvzus