Neighbor weaponizing High frequency cat scarers.

Mr.Saver

greyteam1959 said:

A discreet spray of clear varnish or perhaps hair lacquer over the sensor might do the trick ??

They do a pretty good job at blocking UV light, but won't block much infrared, which is what triggers those IR sensors. Anything that's effective at blocking infrared lights isn't likely going to be invisible to human eyes, as they'll either be opaque or reflect pink-ish lights under the sun.

MrBrindle

What about a tall potted plant like some bamboo to block the sensor? Seeing as she's odd anyway, a row of those would probably work nicely giving extra privacy as well.