We have the turtle since Christmas, so now for four months in operation. Even our little man sleeping in our bedroom and I regret even if he takes off and his "Grööötää" entrains ;-). I can not confirm what others have written here: Our turtle has not smelled, to nothing, to nothing at all. She was completely odorless and I have zero concern to leave it to my son. In his bed it is not yet, however. This is certainly only later. Our room has a size of approximately 5 x 6 m and a sloping ceiling of about 2.50 to 3.50. The blue and green stars shine beautifully and are to look great on the ceiling and walls. For the yellow stars it has really dark (eg, when the little one wakes up in the middle of the night, then the super!). My son, now 1 1/2, they will in any case be great - and so do I! :-)