Hello Diana. I will be hated for stating this, but this is what I saw and experienced.
I'm not sure how far back on this forum but somebody actually did a before and after test. Do a search in this forum. The water was tested out as well as the body of the test subject. No toxins that were identified were reduced. This was done several times. The guy who did the test did not say the ionic foot baths do not help. He just says that the chemical tests did not show anything. I bought one of these ionic foot baths and saw how the brown stuff came from the electrical elements before I put my feet in them.
Last year when gas prices hit an almost all time high, I was looking for ways to improve my gas mileage. I found kits where you use electricity from the car battery to split distilled water with baking soda into hydrogen and oxygen. This gas then gets pumped into the intake manifold. It did help out with the gas mileage. And what I also noticed that the glass jars that contained the water and stainless steal electrodes became very brown after a short time. Also the stainless steal elements were eroded, just like the ones for ionic foot baths.
I prefer to use the foot pads that are taped on the sole of your feet.