Not sure where to post this. I have a sanpit for my toddler but keep finding little egg things in it which I assume are fly eggs. Its so gross. The sand hadnt been in there long. Its been cleaned out lots of times and sand replaced. Ive put cinnamon powder in that didnt stop the problem. It has a lid so when not being played with the lid is always on. It creeps me out I dont want him to play in it anymore but he loves it. Any help please.