Haha, welcome to the wonderful world of keeping a reptile! They have very stinky waste! However, some things to look out for cause you said "Rat soup" if the dung is watery or runny, especially mucus like take them to vet. However, you may find a hard white/chalky looking thing near the poop or with pee, this is a urate and natural for them to pass.
Good luck, apple vinegar + lemon solution helps to get that smell out and kill it with something else.