Hey guys,
Not sure if this is a bug or intended. I tried using one with a worm in at the lake at Metalurg. Caught bitterlings no problem.
Then I made 10 bottle traps and put a worm in each in a stream west of Dubovo. At first I deployed them near the edge of the river. When returning 20 mins later all where worn but no fish existed. Worms where still there.
I moved them into a deeper part of the stream further north and tried again. Same thing happened came back and all where damaged but no fish and worms still there.
No players where nearby on either occasion.
Maybe they don't work in streams but get damaged? Seems unusual though.