In each room on the table, pushed down tab and quickly out of there. After two hours I first glance dared smelled but had not yet aired strictly clear yes. I open the window for an hour and the smell is gone.
So far, I could not sit anywhere without having minimum 3 fleas on my shins and until now me, so an hour later I saw nothing bounce. My cat is losing the remaining fleas which barely twitch and I am vacuuming. Even washing the textiles and saved 300 euros for an exterminator.
Who fast and efficient help against fleas need is properly consult with the fogger. I got me the same two ordered in reserve, so you never know;)