hello Brittany and thank you very much for your post ... no, absolutely no fleas at my place ... you bring up a very interesting point though ... Are tapeworms a common parasite for WC Garters ??
Many years ago I de-wormed a young cat and was forewarned by the vet on what to expect when he passed the mama' motherload tapeworm

... I do not remember which *end* the mama came out but I had the cat in the bathtub when he lost it. Out of curiousity I rinsed it off to check it out more closely. It did look like something out of a horror movie.
I recall the little *white rice* looking tapeworm babies that were passed in the cats poop. I assume the garters would be passing them as well ??