How much did you use and at what rate? What did you pay for your product...it used to be pretty expensive.

Yeah I would like to get my hands on some but copper does the trick. I would like some silver though!

It is cheap the only cost is getting started. All you need is pure silver wire and a battery or dc power supply. You connect the power supply to two pieces of silver wire suspended in water for about 1/2 hour and you will have colloidal silver. if you want it for you ,you should use distilled water and clean the wires off every 5 min.
Before I used it the trees where slowly dieing the leaves would fall off for no apparent reason lot of yellow leaves and many branches where drying out.