My neighbor's dogs are always barking so I think I'm going to leave a bowl of antifreeze out for them.
You must be kidding. Why do you think leaving antifreeze out for them would be a good thing.
I'd like to think this antifreeze will make these dogs become quiet for good.
You shouldn't poison your neighbor's dogs. Antifreeze is a poison and when consumed a dog can become very ill and die. If you have issues with your neighbor's dogs, then try talking to them or talk to proper authorties.
I'm just experimenting with antifreeze. I'll go back to the drawing board on my nefarious plan for my neighbor's dogs' demise. But it's not illegal is it?
It's definitely illegal to intentionally poison someone's pet, so you should absolutely not do it. I don't think you should try to come up with a nefarious plan. Just talk to him about keeping the dogs from barking.