Ive used everything from orange chain cleaner, finishline can spray (works well just expensive), simple green bike cleaner (good value and a good job cleaning) and this product.
What I like about this product is that, like simple green it is eco friendly. This product is easier to buy as the simple green version isnt widely available. I do think the muc off spray takes off the grease better with fewer applications. I would recommend!!
So even if it's biodegradable and natural, any easy cleaning cleanser is likely very strong and potentially harmful. I was surprised at how strong the handling instructions were.
The cleaner has a bit of thickness and it adheres to the drive train properly. This helps in effective dirt and grime removal. I've used a few different types of cleaner but this is by far the best.