It only kills ants it directly contacts and can discolor surfaces and harm plants. The intense chemical solution found in bleach is enough to kill ants, but according to pest expert craig sansig, should be used minimally and as a temporary measure because of its high toxicity levels. · yes , bleach kills ants when the cleaner comes into direct contact with the unwanted pesky creatures. However, it will only kill those ants which come in direct contact with the bleach. · bleach is a household cleaner that can kill and repel ants. Learn five ways to use bleach to eliminate ants and their trails, and be careful of the risks of bleach on materials and health. If a worker ant is thoroughly sprayed or doused with a typical household concentration of sodium hypochlorite, it will die almost instantly. Furthermore, we don’t recommend using bleach as it can be harmful to people and pets. · bleach can kill ants on contact by irritating their internal organs and suffocating them. · the simple answer is that liquid bleach will kill an ant upon direct, saturating contact. · does bleach kill ants? Bleach is highly toxic for the ants and will almost instantly end up killing ants. Bleach can kill all kinds of insects and ant species when applied directly — including ants. Learn how to use bleach to eliminate ants and their scent trails, as well as the downsides and alternatives of this method. While bleach has some ant-killing capabilities, its drawbacks make it less than ideal for frequent use. Does bleach kill ant hills? How do i get rid of ants in my house? Does bleach kill ants? Does bleach kill insects?