Ok, bad idea. I can't get quality rats consistently so Nicon (6.5' bull) has been wiping out my gerbils quite happily and refused 3 guinea pigs. I fresh killed one basically in front of him after letting it move around some in his enclosure but no go still. I've heard others say they introduce new foods or change the diet by holding out one and then giving the other food item or feeding one and then the other if small. I held the gerbil by the tail on the stone tile hide and basking spot making enticing scrambling noises behind the guinea pig. If I didn't mind it eaten I would have just fed it and then the guinea pig but I haven't decided my new breeding pairs from the 2 weaning bins yet so I was keeping it back with just my hand, you try to hold a running gerbil by the tail with tongs, while trying to offer the guinea pig. Well, Nicon said this is stupid and went for the gerbil getting my arm in his attempt to arc around the guinea pig. Gerbil was returned safely with only some confusion, left the guinea pig in on a maybe I at least triggered enough feeding response, and I can't find the betadine or chlorhexadine scrub so all we have to disinfect is rubbing alcohol apparently....

I haven't taken aspirin lately so I'm back to clotting fast at least.
Snakes are not dumb enough for that idea. Only humans learning about snakes are. I am debating trying to scent a guinea pig as gerbil instead.