Best way to deep clean these tile/bath sealant strips

[ElCI]

Sorry not sure if this belongs in a different forum but I'm looking for a way to deep clean the mould off these strips that seem to have been used instead of silicon sealant.

I'm trying to get my (absolutely horrible) bathroom a bit more presentable for putting the house the house on the market, I think I'm going to have to live with keeping the lovely green tinted times in place but want to at leasake the place look a bit cleaner. Any advice on what sort of product tonise or if I'm better just getting like for like replacement strips is much appreciated

 

[RandomGrinch]

Hi,

Some mould spray would be a good start!
I've had good results with the HG stuff:
https://www.diy.com/departments/hg-mould-remover-0-5l-trigger-spray-bottle/136829_BQ.prd
May need a couple of applications, but it's good stuff - ventilate the room well!

 

[Mr Chibs]

I'd chop it out and redo to sealant.

Looks like it might have shrunk back a bit and allowing water underneath.

Failing that you could try bleach and water and a toothbrush (not your own)