It is a flying squirrel. I studied these animals for many years in Canada. They are harmless to you and your possessions. Please DO NOT try to randomly poison wild animals.
It's a man wearing a gorilla costume, shaped like a rodent, who came out of a mother-ship, wielding a machete to hack up love-sick zombies who are craving beef jerky and peanut butter.... or, it's a chipmunk. You should probably submit this video to 'Monster Quest' where they spend an entire hour, gathering evidence, but never actually find anything.
Dude, don't f--king use poison on any animal. WTF? First of all no animal deserves to die in this painful and sick way. What the hell?? Next the poison can harm and kill other animals. Lastly, it can seep into the soil and cause harm. This is such ignorance it's unbelievable. This is how people behaved a long time ago. Now we know better and it's cruelty! Use your heart and brain. There are different methods that are humane and don't cause suffering.