What is the property of the spider net?

Manipulate moths using a light source attached to your body · By
Trigger:
Idea:
I made it through six levels in the Variety area, but now I’m stuck on several others. For Retrieval…
It seems like I’m supposed to put the snowball on a moth and entice the moth away from the wall. But no matter what I do, the moth continues all the way to the light, which makes the snowball melt. I vaguely remember a mechanic where the moth only follows one space before losing sight of the light, but I can’t see a way to make that happen here either.
I’d recommend starting with Gate, the first hint is mainly just an observation to help reduce the possibility space. The hints for Control and Glow are probably not very helpful so let me know if you’d like additional guidance or if there are any assumptions you’d like confirmed/denied.
Gate:
Control:
Glow:
Could I get a hint for Variety: Islands? That’s my last unsolved one of the Variety level.