Pet Wash

can anyone reccomend one that smells have decent???
I keep washing our dog in a tea tree/oatmeal wash but it stinks, she stinks and anywhere she is stinks! I can't stand it anymore! I was using this because we thought she had fleas... we can't find any on her (Or the cat), in the house, in her bed anywhere, but she keeps biting herself and scratching like she has fleas. Now i'm wondering if shes developing an allergy or something.
She is primarily an outdoor dog but comes inside occasionally - but if I can't get rid of this disgusting smell, she has to stay outside. Any suggestions?

I used to use a mix of baking soda and water to wash the dog, then rinse with diluted apple cider vinegar. He had itchy skin and the ACV fixed that.