How long does it take to take effect after drinking any sort of poison i mean cleaning stuff or things that you are not supposed to drink?

Actually, the effects of many cleaning products start from the first sip. If they do not kill you, they will make your life miserable--think of having your mouth and esophagus burned and needing numerous surgeries to fix. That is why it is so important to keep products in their original packaging, up high AND locked up when there are children in the home.