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.
This degreaser works fine though my last cleaning I had to clean twice to get it squeaky clean - may have rushed the job. Decent odor, no residue on concrete after. Issue is the spray bottle - it is terrible and sticks constantly. I respect the Muc-Off brand but the company needs to upgrade its spray bottle for this. Very aggravating when your are cleaning and have to operate the spray bottle with two hands.
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.