My kids absolutely love this toy, however, I have noticed a lot of fine bright blue powder-like particles when I am sweeping our wood floors. Being a nurse, I am very concerned that if I'm finding this 'dust' two and three rooms over from where the tent is set up, that my kids are actually inhaling it into their lungs in addition to tracking it all over the house via their socks. Thusfar no one has mentioned any strange blue streaks in their Kleenexes when they sneeze etc but since 2 of my kids have had problems with bronchospasms and wheezing in the past I am taking this tent down until I hear from the manufacturer as to what is going on. Has anyone else noticed this problem?