This is for those people who think magnetic collars do not work. I now have proof with my own dog that they actully do work.
My partner bathed my 6yr GSD two days ago, he took her collar of and the magnetic collar and bathed her as he normally would. Well the magnetic collar was looking a bit dirty so i decided to wash it. well i forgot to put it back on her, and i have just been in the garden with my pup playing and called Ice (older dog) to come and join in, well it took her a good few mins to get off of her bed (which she has slept on for two days not wanting to get up axcpet to eat and go out) she then hobbled out to me, My partner said oh she is limping and has not done that for a long time, i said to him oh god i forgot to put her collar back on. So we put it back on and already (within an hr) she has jumped back onto the chair where she normally sleeps (hasn't been on there for two days) and has stopped limping. The big test will be tonight when i take her to the field.

Hope that all makes sense :-D

I'm delighted it has worked for your dog. It was a shame it didn't work for mine, because I did so want it to. But things work for some and not for others. That's life.
:)