Tweaks such as demagnetizers ionizers for lp's


What are the options as in brands that demagnetize 12" lp's. The ones I have found seem to be expensive $2k and up.
What other tweaks are available ionizers included?
pedrillo
Considering this handheld demagnetizer is both a magnetizer and a demagnetizer, I am wondering if you need to press the button to demag or just have it plugged in?
Want to try the music direct one on my CDs and LPs. Sounds like a pain to disconnect all the cables to zap them also but will give it a try if it works.
Can you use non-powered magnetizers / demags with similar results to the powered ones or do they not keep up?