Business Enquiries: https://www.thebluecats.com.sg/ Drain flies, also known as Psychodidae, are small teardrop-shaped insects often found in bathrooms and toilets. Although they may look cute and harmless with their furry wings and slow flying, they’re actually one of the most troublesome pests to deal with. Unlike fruit flies, drain flies thrive in damp environments and are typically drawn to places like sinks, drains, and pipes where stagnant water and organic waste like hair and soap scum accumulate. These pests aren’t just annoying: they reproduce at an alarming rate. A single female drain fly can lay up to 100 eggs at once, and these eggs hatch in just 32 to 48 hours. The larvae feed on the gunk inside your drains and can grow into adult flies in as little as 8 days. So if you spot a few flies today, you’ll likely see even more in the coming days unless you address the source. Killing the adult drain flies is easy as they fly slowly and are easy to swat. But the real problem lies beneath: the larvae stuck to the gunk on your drain walls. These larvae are not affected by running water since they cling to the filth that water doesn’t reach. That’s why even after getting rid of the visible adult flies, new ones continue to appear. To fully get rid of drain flies, you must eliminate the larvae. This means cleaning your drains and pipes thoroughly to remove all the built-up grime. Chemical drain cleaners from supermarkets like NTUC FairPrice can help. But long-term, regular cleaning and maintenance of your bathroom drainage system is the only way to prevent them from coming back.