If you’ve ever noticed a strange pink or reddish film in your shower, sink, tub, or toilet, you’ve likely encountered what many call “pink slime.” Despite its mold-like appearance, it’s actually caused by a bacterium known as Serratia marcescens.
This bacteria thrives in damp, humid spaces and feeds on soap scum, toothpaste, and shampoo residue. Bathrooms, with their constant moisture and warmth, provide the perfect breeding ground. Poor ventilation or infrequent cleaning makes the problem worse.
For most people, pink slime is more of a nuisance than a serious threat. However, in individuals with weakened immune systems, Serratia marcescens has occasionally been linked to infections such as UTIs, respiratory problems, or even pneumonia.
The good news: pink slime is easy to remove. Simply apply a bathroom cleaner containing chlorine bleach to affected areas, let it sit for 5–10 minutes, scrub gently, and rinse. For toilets, add bleach to the tank, let sit, and flush.
Prevention is key—wipe surfaces dry, fix leaks, use ventilation fans, and clean regularly with antibacterial products. With consistent care, you can prevent pink slime from returning and keep your bathroom sparkling clean.
