Slap them with a wet noodle until dead.
Get some lawn toads. They will cancel the power of the gnomes. What ever you do, don't get a lawn globe... UFOs tend to use them as landing becons.
I guess you could but it would defeat the whole purpose. If you built it then it's identifiable. UFOs by nature have to be unidentifed, coming from a place that is not Earth, or unlike anything we as humans can build.
Where humans and alcohol are, UFOs will be.
There have been reports of sightings of white UFOs.
the correct answer is UFOs thanks for asking
Actually you shouldn't. You should remain sceptical. There MAY be UFOs, but so far, there is no firm evidence for them.
The ones who study UFOs are called Ufologist. They study every thing about unidentified flying objects (UFOs).
Aliens, by definition, primarily reside in space or in the planets inside of space. Should you want to find UFOs, the best bet is to situate yourself by some sort of experimental aircraft base and hide from yourself the fact that the UFOs you see are likely experimental aircraft.
UFOs can go as high as your imagination allows.
Please check the related links for information about UFOs.
Since UFOs are unidentified, it is unknown what is inside of them.
No, UFOs are not technically extinct, they are just rare to see.