I'll do that, thank you for the answer.

As for the window thing, my mom does it with a chiffon and a spray bottle, and she does it perfectly. I've tried a lot of time, but I cannot get it as clean as my mom's method, and she gets angry at me when I do it and says she doesn't want to deal with my stupidity, so I've just stopped, you know what I mean ? They even get angry at me for splashing water when picking up a drink so.

I'll try seeing if there's something like those agencies in France, since that's where I live.