What type of things have a poisonous sign?

A poisonous sign is commonly found on substances and products that contain toxic chemicals, such as cleaning agents, pesticides, and certain industrial materials. It is also used to label hazardous plants and mushrooms that can be harmful if ingested. Additionally, the symbol may appear on medications that can be dangerous in incorrect dosages or when misused. These warnings are crucial for ensuring safety and preventing accidental poisonings.