Hi! Thanks for the compliment to Frejya! You are right the loud sounds are part of the world so we have to show them that they are not for scared, Frejya is still learning so with patience I hope to get her to improve, I am very happy to know that you cat has already lost the fear of the vacuum cleaner, many cats do not usually adapt and only get very upset when they see their owners use it hahaha, thanks for commenting! Greetings and blessings to you!