Do wasps try to get revenge?

No, wasps do not try to get revenge in human sense of intentional retaliation, as wasps are insects with simple nervous systems that lack complex emotions, planning, or memory for revenge, though they do exhibit defensive aggression and colony defense that can appear as revenge. When a wasp is killed or threatened near its nest, it may release alarm pheromones that alert other wasps in colony to danger, causing them to become aggressive and sting perceived threat, which can look like revenge but is actually colony defense mechanism, not personal retaliation. Social wasps like yellow jackets defend nest vigorously and will chase and sting intruders repeatedly if nest is disturbed, as they perceive threat to colony. Individual wasps do not hold grudges or remember specific humans to seek revenge later, they lack cognitive ability for that. However, if you disturb nest and then return, wasps may still be agitated and more likely to sting due to lingering alarm pheromones and heightened defensive state, not revenge. So wasps do not try to get revenge, but they do defend nest and release chemical signals that cause other wasps to attack, which can be mistaken for revenge. To avoid being seen as revenge, avoid swatting wasps near nests, move slowly, and if nest is near home, contact professional pest control for safe removal rather than attempting to kill wasps individually.