Glutaraldehyde is used to sterilize medical, dental and laboratory instruments. It can be a harsh irritant too, and that's why they recommend such a weak dilution for cleaning. I put a tiny amount in my plastic coffee grinder reservoir and it cleaned it well, but unfortunately they aren't kidding about long-lasting scent! It also seemed to distort several areas where the plastic became slightly whitened and translucent. Great stuff for certain uses. Use wisely.