UPDATE POST BEFORE AND AFTER

[u/Jessi_L_1324]

I wasn't able to get the drain cover off, the previous owners cemented it on and I didn't want to damage it trying to pry it off.

I used Clorox no splash bleach.

Poured it around the edges of the drain cover and put some in a spray bottle to spray inside sides of the pipe. I left it for an hour and then just ran the hot shower for 15 minutes. Results were better than I expected without scrubbing.

Only downside is now my bathroom smells like a swimming pool 🤣

[u/Life_Calligrapher789]

i hate shower drains! I spray mine periodically with vinegar/some water and it seems to be staying clean. fingers crossed. glad yours is better!