I recently moved into a house with a walk-in shower, I've always had a shower over a bath before. It seems like I'm having to clean the drain really frequently, like every 6 weeks or so, otherwise it starts getting blocked. And cleaning this drain is the worst job known to man. It's not really getting blocked up with hair so much, it's mainly mould. I'm wondering if this is normal for a walk-in shower? Or if there could be something non-ideal about how it's been installed.