Cleans Oven and Does Not Hurt Boy

My wife regularly uses SUM to clean our oven and it works better than anything we
have tried before. The point of the story is this though. She did it late at night and left a
three quarter full spray bottle on the work surface next to the cooker. Our three year old
twins got up early the next morning and decided to use it as a ray-gun as they played
together. When we came down the living room and kitchen smelled strongly of SUM.
We found the spray bottle almost empty and one boy soaked in SUM. It was a
bit expensive maybe but absolutely no harm done. What if that had been our normal oven
cleaner? Thank you M!
Rob Channings, Manchester, UK