Mole rat repellent

Mole Rat Repellent is a special green chemical concocted up by Moira Brown of Megaton to try and repel mole rats away from the user. It is not an actual item, however it is applied to the Repellent Stick, which is given to the player by Moira Brown in a part of the quest Wasteland Survival Guide. Upon testing it, the discovery is made that instead of simply repelling the affected rat it causes some kind of reaction which results in the affected mole rat emitting smoke for a short period before their head explodes violently in a cloud of blood and gore.

Visit the page Repellent Stick for more information.