Hi! I’ve been having trouble finding an answer and so I thought, I’d ask, What is the best way to maintain waterproofiness for the hysromoths in the field. For this deployment I went out, and will have to change the batteries in the field, so I plan to dry and brush off the o-rings with a soft bristled toothbrush, then I will apply a small layer of O-ring grease. Is this appropriate and there is anything else I should do?