Removing Residue on Furniture from a Flea Fogger?

I used a flea fogger next to my varnished dinning room table. I had place mats on the table. You can see where they were because of the fall out of the flea fogger. How can I remove this residue from the fogger? I have tried murphy's wipes with no luck. I have tried rubbing the daylights out of it. Is the finished damaged or can I get this clean again?