Getting help from specialists is definitely the most secure and most cost-effective wasp nest removal technique. If the nest is on a hard-to-reach place, then consulting and seeking help from a specialist would remain to be the only option. They are normally equipped with safety equipment such as lance which has that extra long reach, which allows them to shoot chemical pesticide powders or commercial liquid bug spray through a distance. They also wear protective gear to cover them in case they have a nasty confrontation with the wasps.