So then just use a brush and rub the PCB every 5 years? I mean they can only grow through air right? My 35 years old breadbins show no sign of these, maybe they

So then just use a brush and rub the PCB every 5 years? I mean they can only grow through air right? My 35 years old breadbins show no sign of these, maybe they have more lead in them... time will tell! How ironic if the old breadbins outlive modern hardware!