Organophosphinic acid is like a group of special chemicals that can be found in things like pesticides and fertilizers that farmers use to help their plants grow.
Basically, they have a special power to block certain enzymes in bugs that try to eat the plants.
It's like if a thief tried to use a key to get into your house but you put a special lock on the door that the key couldn't fit into. The thief wouldn't be able to get in and do bad things. That's kind of what organophosphinic acid does to bugs.
But, these chemicals can also be dangerous for humans and the environment if they are not used properly. So, scientists are studying them very carefully to find out how to use them in ways that are safe and helpful for our planet.