depends what ingredients you use (bleach)

yo true
i wanna know the answer now

poison don't expire you could use oil not veg oil crude oil

Wait….IS it good for you?

Holy shit ur right

if it did then i woul probobky be less effective

some poisons like cyanide actually do have an expiration date and once it's expired it wont kill you, but it will make you sick

Well . . . no. But some may not be AS bad for you.

And I don't know what kind of person you are, so I'm not going to recommend trying. Actually, you know what? Go ahead, if that's your type of thing.

no and yes, no because it wont kill you and yes because it will give an upset stomach

the real question is... CAN IT EXPIRE?

It could be more toxic; it could be less. It could be differently toxic, so that it's no longer as effective against its target but could cause severe harm to other species. It only means that one chemical may have started to degrade, and the end product of that degradation could be very different. - google