I did use a mask when I was attempting to clean the oven with it. But really maybe the mask isn’t really enough. Maybe not worth the risk..... my outside windowsills wouldn’t really benefit from it as the house is only 10 months old and am trying to keep on top of them rather than do a big clean every now and again.You should only be using Elbow Grease outdoors or in well ventilated spaces, and if it's been inhaled you must "remove victim to fresh air and keep in a rest position comfortable for breathing. Immediately call a POISON CENTER/doctor." It legitimately says this (in very small print) on the bottle. The word victim alone makes me uncomfortable.
Thanks for the advice It’s nastier stuff than the advertising lets on.