That is where a larger diameter pipe comes into play if you want to remove multiple. You just have to place it at an angle, so the light doesnt quite hit them. And, it is the reason for the sponge. It can be place against other nems and not hurt them. Yes they are covered for a few hours, but no worse than a very cloudy stormy day in the wild. You may even have a nem attach to the sponge lol. Had that happen a few times when doing that.Nice. I've peeled off thousands with a plastic knife and a bit of time exposed to air, but as you know some of the guys in the deep crevices are difficult. Any idea how well this works for groups of 50-60 nems together on single rocks? Not much space between their feet.