Robinsons Fruit Shoot - is it bad for kids?

I know it says on the bottle "No added sugar" but I get the feeling it will still rot their teeth. My mother in law insists on giving it to my 2 year old son as he thinks he is a "big boy" drinking it from the bottle but I usually only give him very dilute squash or water. What do other parents... show more I know it says on the bottle "No added sugar" but I get the feeling it will still rot their teeth. My mother in law insists on giving it to my 2 year old son as he thinks he is a "big boy" drinking it from the bottle but I usually only give him very dilute squash or water. What do other parents think?
Update: Jam123 - if you read the question you will see that I give him very dilute squash or water. I also give him pure orange juice.
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