How often do you demagnitize your MC cartridge?


I have never owned a demagnitizer but a salesman brought one over once and did some cultish ritual over the cartridge, killed a chicken and when he was finished it sounded better!!!
Is this something I need to be doing regularly? Any advice?
128x128nrchy
Do not do it. Cross-ground them and play them for 30 sec. It WILL accomplishe all clearly auditable benefits and you will be all set to go for another couple weeks.

Rgs,
Romy the Cat
YA! What he said, sstark@carolina.rr.com, it's very important to be done immediately, but that would be the only time necessary.
I demagnetize my Lyra Helikon, occasionally (every 6 months or so). The improvements are noticeable. It is also recommended by the manufacturer.

For those who have not tried it, how can you be so certain that it will have negative effects? I have demagnetized many MC cartridges over the years without any negative side effects.