Ants Invasion

Just a few seconds ago, I almost drank from a cup with up to five dead ants floating in the water. I don't know whats up with the ants in my room recently. They have taken a special interest with my water these past few days. I have a bar of snickers on the table and they would pass chocolate for water (that drowns them)! I really don't like killing ants. It makes me feel like a murderer because I there are usually hundreds of them gathered together. If I want to get rid of them, I had to kill them all together. But these ants in my room are either extremely thirsty or suicidal. The chain of ants keeps coming. If I leave my cup down for five minutes, there would be two more dead ants drowned in my cup of water. Sometimes I would forget and almost gulp down some ants while I drank the water. I actually suspect that I did drink some of the drowned ants, which makes me not only an ant murderer, but also an ant-drinker. If the ants don't mind, I really do prefer not to have any extra ingredients added to my water; I am perfectly fine with drinking pure water.