I have been staying in my current apartment for about twenty months already. At the thirty-sixth level, it enjoys great ventilation from the constant breeze from the south. There's also plenty of sunshine; the living room balcony faces the west, while my bedroom faces the South.
At such a high floor, I would expect no insects to be lurking around. Unfortunately, there's a minor insect issue in my bathroom. Due to the accumulation of water from the shower area into the drain pipe, I do see tiny drain flies for whatever they are called) flying out from the drain cover every morning when I am having my warm shower.
Initially, I left them alone, thinking that they were harmless. They proved to be harmless as expected. Life went on. Then one evening, I looked up at the corner of my bathroom ceiling and found a family of more than 10 drain flies staking their sovereignty in the tiny universe of my bathroom. I was perturbed. I pried open the drain cover and sprayed as much insecticide as it was possible, then covered the floor trap to prevent any insects from escaping. I believed there were many casualties from my actions. The drain fly population decreased for a short while. A week passed, and then they were back. This time round, they occupied three corners of the ceiling, as if they were trying to mock me.( Collapse )