Senoufou, the image of you hissing at Spirit is alarming!

In my experience, the other noise that cats run from
is handclapping, repeated loud handclaps.

More than once, I have strolled up to a number of cats who
were so engrossed in disagreeing with each other that
they took no notice of their surroundings any longer.
I got my two hands out and did my best, with my handclaps,
to imitate the crack of a whip. As loud and rhythmic as possible.

Were those cats ever startled!
First they crouched, frozen in motion, and round-eyed.
A few more cracking handclaps at close quarters, and
WHOOSH! they scattered to the four winds.

(I guess this wouldn't work
if the cat was hard of hearing...)