Does killing ants make me a murderer?

Insects are living creatures just like animals and people so that must make me a hideous person even if I killed the ants to keep them out of the kitchen in my house because I snuffed out a living breathing life form. I wonder if the size of the ant is what makes animal police track down people abusing dogs but won't arrest someone who used mouse traps or raid to kill bugs in their home. I guess intent has a lot to do with it also in addition to the size of the creatures to notice bodily damage. Ants are too small unless you use a microscope whereas damage to a dog can be seen with the eyes.