Are ferrites effective for cabling?


Good day.  I have several ferrites in varying sizes.  Are they effective for eliminating noise or stray inductance/capacitance?  If so, would they be best utilized on interconnects or speaker cables, or both?  Or, should they not be used at all?  TIA for your thoughts.
wisciman99
Verastarr uses a power mixture of earth minerals having noise reducing properties. Contact Mike Powell Audio to discuss. He has posted videos on his YouTube channel about these materials. His YouTube user name OCD HiFi Guy. 
Best place I think is in power cables.

Worth trying on the amp side of a speaker cable, especially with amps that use feedback.
All my power cables are PS Audio & have 'ferrite impregnated jacket'. I find them very effective with noise reduction / elimination, although some have commented that they render the sound 'dark'. I actually prefer a 'dark' sound anyway - my 'cup-o-tea'