I was looking at getting this flux cleaner: Fluxclene FLU200D but then I noticed that in the datasheet, it mentions an inhalation toxicity of 300 ppm. That sounds like it's easily exceeded by just spraying the cleaner onto my PCBs, even if I have reasonable ventilation.
Should I avoid this cleaner or am I misunderstanding this parameter?
More generally, how do I pick a safe flux cleaner? I've used isopropyl alcohol and found it entirely unsatisfactory in dissolving the flux residue.