Cats in a vegetable patch, no thanks!

Hello There,
I bought the ultrasound device after a sweltering in the garden Nuthatch
was beaten by a neighbor's cat.
It has been found by now six weeks in other respects to be very effective:
No legacies of "love pussies" more in the vegetable garden!
I'll probably still need to purchase a second unit, as now, of course, other garden areas
"To be Favoured. The cat friends from the neighborhood are not to move their animals
get used to the private garden.
I have installed the device to the carrier on a small wooden peg and put it
about every 14 days something else on.
For smaller gardens a mE very good method, the stray cats (with us ca.ein half dozen)
to frighten.

Dr. K. Otto