I have a new cleaner who has just started today and has just spent her first two hours working upstairs. Suspicious that she has not appeared to have collected many detergents, I have just checked in her and she has cleaned the bedrooms and bathroom using glass cleaner and cillet oven cleaner. I said 'this is for the oven.' Yes, she replies cheerfully. I use it for sink. Would I be unreasonable to not have her back next week? Should a cleaner know which products to use or should I have to train her? Maybe because her English isn't so great she can't be expected to read the labels? But then how can I trust her to clean properly?