Noisy diffuser

[Smoothguitar]

Does anyone have a squeaking noise constantly coming from the diffuser?
If yes, any solutions to this or do I just need to buy a new one?

 

[gray_matter16]

This happens to mine when the disk is covered in algae. I take it out, let it sit in a diluted bleach solution for a few hours. Clean it out and run some air through it to make sure all the bleach is out. Then when the algae is cleaned out it's better.

 

[Smoothguitar]

I tried this and it seems to have worked. I only hear a fuzzy sound of bubbles rather than a whistle- thanks!