![4 holes inside bathroom sink drain (flange?) keep getting water just sitting in them. And some of them have black sludge & junk in them. How can I clean them out? And 4 holes inside bathroom sink drain (flange?) keep getting water just sitting in them. And some of them have black sludge & junk in them. How can I clean them out? And](https://preview.redd.it/egcmnqsn25m31.jpg?auto=webp&s=eba6f16cd7d1cffe0a0529ae8c203316dab7f92c)
4 holes inside bathroom sink drain (flange?) keep getting water just sitting in them. And some of them have black sludge & junk in them. How can I clean them out? And
![Bathroom Sink Drain Replacement Parts, (Pop-up Drain Assembly) Include Chrome Plug and Flange - By PlumbUSA - - Amazon.com Bathroom Sink Drain Replacement Parts, (Pop-up Drain Assembly) Include Chrome Plug and Flange - By PlumbUSA - - Amazon.com](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/616d5HTwacL._AC_UF894,1000_QL80_.jpg)
Bathroom Sink Drain Replacement Parts, (Pop-up Drain Assembly) Include Chrome Plug and Flange - By PlumbUSA - - Amazon.com
![TPCYAN Flange Bowl Type Sink, Basin Drain Waste Stopper, Kitchen Sink,114×G1-1/2(47.5mm) ×60mm Strainer Sink Accessories : Amazon.co.uk: DIY & Tools TPCYAN Flange Bowl Type Sink, Basin Drain Waste Stopper, Kitchen Sink,114×G1-1/2(47.5mm) ×60mm Strainer Sink Accessories : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/614DwLXev2L._AC_SX425_.jpg)
TPCYAN Flange Bowl Type Sink, Basin Drain Waste Stopper, Kitchen Sink,114×G1-1/2(47.5mm) ×60mm Strainer Sink Accessories : Amazon.co.uk: DIY & Tools
![Fixing improperly installed bathroom sink drain, really struggling to unscrew flange with so little space to maneuver, help?! : r/askaplumber Fixing improperly installed bathroom sink drain, really struggling to unscrew flange with so little space to maneuver, help?! : r/askaplumber](https://preview.redd.it/k5r0sb9umvh81.jpg?width=640&crop=smart&auto=webp&s=636bdb869871537a7cc5dda780afeef6e4a64cd7)
Fixing improperly installed bathroom sink drain, really struggling to unscrew flange with so little space to maneuver, help?! : r/askaplumber
![Kitchen Sink Drain Set - Basket Strainer & Disposer Flange and Stopper - Kitchen Drains - Sink Parts - Sinks Kitchen Sink Drain Set - Basket Strainer & Disposer Flange and Stopper - Kitchen Drains - Sink Parts - Sinks](https://www.signaturehardware.com/media/catalog/product/cache/1/image/1500x/9df78eab33525d08d6e5fb8d27136e95/4/1/411103-drain-flange-set-stainless-steel-exploded_1.jpg)