Once you get them on your farm as we did (yes, in the UK) you change your tune very quickly. A herd can destroy acres in a single night. You use whatever you can to eradicate the unwelcome pests, or go bust. Rifles with thermal sights are best so you can work after dark. Night vision can work but if you use an illuminator they can see some of them (depends on the wavelength of your IR torch). And suppressors (no such thing as a silencer unless you are in a movie) save your hearing - not interested in the Boar.