Will it get rid of rats, mice, possums, and raccoons?

Yes, the granules will repel all of those animals.

Thank you for your question. Repels All can repel rats, mice and racoons, however the product cannot repel possums. Repels All needs to be reapplied to keep repelling animals. It cannot get rid of the animals as the product is designed not to hurt the animals, only repel them.