well i remember when i was a MCpl/Sgt and i was given a tast to clean the washroom, or to perform a garbage sweep...i would task a bunch of cadets to assist me, and i would myself help them, as well as supervise
theres a fine line between doing the job yourself, and being too distant from the cadets in your supervisory role...i try to walk that line as best i can, so i am getting "down and dirty" with the cadets, leading by example, showing them exactly how to do the job right, and helping around as needed...while keeping myself distant enough to assist everyone, and keep an eye on whats going on
now about that WHIMIS thing, i am sure cadets are not allowed to handle heavy chemicals, because that would like be dangerous. my corps uses a map and water, and whatever soap is avaliable in the dispensors to assist if they feel it necesary, no harsh chemicals because nobody i know is qualified to handle them
at Vernon, a few years back, some cadets form D & C bought cleaning supplies from town, to assist them in cleaning the floor of their barracks...they mistakenly mixed them together and created a mustard type of noxious gas and they had to evacuate the building. luckily i dont think anyone was injured too severely