They take a few days to work. Banded palm thrips (Parthenothrips dracaenae) Occurs all year round on various glasshouse and houseplants, especially those with relatively tough leaves such as Ficus, Dracaena, Citrus, Monstera, Schefflera and palms. A blackish-brown thrips with banded brown and white wings that causes extensive silvering of the leaves. What does thrip damage look like? These bugs are phytophages, which means they feed on plants exclusively by focusing on a few specific parts. Some information about this post: I discovered maybe three weeks ago what looked to be like thrips on my my monstera (first photo). All available at your local hydroponics shop. The bugs eat all the thrips until they run out of food and then they die off. You’ll often see plants that exhibit the following symptoms from thrip damage: I used neem oil (immediately) and then a systematic insecticide (a week and a half later) to treat them, which seemed to work. A Dutch company called Koppert sells these plant hangers full of predatory mites that only eat thrips and not your plant. Thrips will attack all parts of the plant but mainly focus on the pollen, flowers, leaves, buds, fruits, stems, and twigs.