I have had fisher problems at my home woods for 7 or 8 years. First year the fisher chewed 250 -300 drops. Took me 2 years to trap it. 2 year later another one moved in. The new guy chews only 50-60 a year and is not attracted does by traps. I will get it some time.
I have been taping at my remote woods with 2,300 taps for 6 years and a fisher chewed tubing rolls in a pile as we started to set up the woods. Not a good sign. That one did a lot of damage over the years (hundreds of drops a year and lots of laterals) and I finally got it in Jan 2018. Then a new one moved in this summer. Have not gotten it yet. Just keep setting the traps.
Joe
2004- 470 taps on gravity and buckets
2006- 590 taps on gravity and buckets 300 gph RO
2009- 845 taps on vacuum no buckets, 600 gph RO
2010- 925 taps on vacuum new 2 stage vacuum pump
2014- 3045 taps on vacuum, new 1200 gph RO
2015- 3104 taps on vacuum
2017- 3213 taps on vacuum
3' x 10' oil fired evaporator with steamaway