Good points well made.
I use Putangues most of the time and I'm satisfied that an overwhelming percentage of the kills are humane.
The only method of ensuring moles don't suffer from being foul-caught would be round the clock 24 hour monitoring - an impossibility. From a purely commercial perspective, 24 hour trap checks don't stack up either; time, diesel, etc.
Mole catchers periodically get a bad press. Did anyone hear the recent phone-in on the Jeremy Vine show? A member of the public had seen a bunch of scissor trap handles sticking up whilst visiting an National Trust property and had been enraged by the fact that such an organisation would deign to 'persecute' wildlife in this manner. Of course, JV, being a confirmed urbanite, liberal, tree-hugging, bleeding-heart anti with zero understanding of country life, was fully on side, so when a certain prominent representative of the British Mole Catchers Association went on and explained that moles caused a lot of damage by breaking patio windows,(yes, a tiny minority of listeners knew she meant mole hills = stones + lawnmowers driven by idiots, but she made a right hash of it) her explanation was ridiculed. One good lad went on and spoke about Putangues, but to be honest, he was kicked to the curb by the thoroughly biased presenter. In short, some of the unelected self-styled (and as Torquemada says, self-serving) 'gurus' who purport to represent those who provide mole-catching services need to up their game considerably if they want to be taken seriously by anyone.