wipes solution.... it doesn't belong in a sippy cup

I use these wonderful little bits to make wipe solution for Gracie. First I started with them in the good ol' peri bottle that we all get sent home from the hospital, then I use a wipe warmer, but am now back to dry wipes and the peri bottle. Basically, baby bits are just glycerin and tea tree oil. You add one to your water solution and desolve. It's a good, natural cleansing solution. I have been using them for awhile and purchase them from Jillian's Drawers.

So, now to why wipe solution does not belong in a sippy cup. Yesterday, I was changing Gracie's diaper. I went to put the dirty one in the pail with the wipes (which I keep in our laundry room since it's right next to her room). I come back to find Gracie chugging wipe solution right out of the bottle. I normally put the bottle up on her dresser, but must of left it down while I was taking care of dumping the diaper. I looked at the ounce mark on the bottle and going by memory of where I thought it was prior, it look like she had drank about two ounces of it. I called poison control and the good news is tea tree oil is not toxic and nothing happened to her. The solution was mostly water ( I actually tasted it while on the phone with posion control) and they told me the worst thing that might happen is she would vomit, which she did not. Now if only I can convince her that vegetables taste way better than wipe solution........