Hi Kurt,
Unfortunately, I don’t have personal experience with these products.
It may work fine for some small PCB series and simple PCB design.
In the ideal case, you should use an ultrasonic cleaner with some enzyme fluid. The industrial spirit/isopropyl alcohol instead enzyme fluid may be used only as temporary solution – just for prototype boards. Alcohols may be soaked by plastic materials and cause slow corrosion inside = limited lifetime, in years.
On another side, this is not an ideal solution for PCBs with small mechanical parts like a buzzer, … we should seal them prior submersion.
I hope it helps you.
Have a great day,
Radek
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