Technically, as a medical professional I can tell you there's no such thing as "treatment free". You may manage your bees "chemical free", but even feeding is a treatment for starvation. So if you get a minor cut on your finger, you apply a bandage, although you might not put on antibiotic cream or wash it out with hydrogen peroxide, you're still managing the wound with a covering. Manipulating colonies for their benefit is the same thing. There are plenty of ways we manage the bees without chemicals, but we're still changing their environment for their benefit - we are animal caretakers and we should do that as a minimum no matter what our individual philosophies are about chemicals.