I use this for sprouting wheat grass seeds, before planting into an organic soil mixture. It is sturdy. It IS dishwasher safe.
Although I can understand why people are having complaints about water not flowing through, they need to understand that water has a surface tension.... you need to start water flowing through the holes slowly (use your fingers to help) before putting this under a full-force faucet. I havent have never seen a gnat go through my lid. It has small risers, so if you set the jar completely upside-down, there is still a way for water to drain (and minimal air flow).
If I need another, I would certainly look back at this one.