Mine have been in for 15-20 years(?) and I don't think I remember a problem with any of them. Maybe I lost one but I can't remember. Being I am up in the mountains and in the woods, my trees take lots of hits from the lightning. Just walk out in the back yard and you see trees with large scars on the bark where the lightning flowed. In the old house ( right next door to me) one large lightning bolt hit a tree on the property and took of 5 light bulbs and 3 dimmers in my house.
