Does anyone have any experience of these? I have managed to acquire not one but two strays, and one of them I have absolutely no chance of getting to a vet. It's a pedigree, either maine coon or Siberian I'm not sure, and surely must be chipped but it refuses to come in the house or let me catch it. It will however sit very close to me outside while I feed it. The other seems to be a very recent stray, knows exactly what a pouch is and would clearly like to come in and be adopted (but is aggressive with my cat so no can do). I'm thinking the expenditure on a scanner would be worth it to at least find out if they're chipped before I wrestle them to a vet.
Do the scanners work, and what information do they give?
TIA