Has anyone else used one of these. Although I have used it quite a few times my reading are always much higher than the book suggests although they do say there is a wide variation between bitches. Normally I have a chat and a it of reassurance from the UK Boss products chap who has always been helpful and understanding. However - I cannot find his site anywhere now on the net and so don't have any contact details. I assume he has finished.
For the last 2 days ( day 13 now I think if I caught 1st day) readings have varied between 1300 and 1500 average. I can also go on the reaction between her and my other dogs but although there has been a bit of flirting not a great deal.  For her 1st litter I mated her at 17 and 19 days as the dog  I went to on day 15 ( my original choice) would not play ball. She had a lovely litter of 10 puppies 5 of each so I was very lucky.
Just wondered if anyone had experience of such high readings over 2 or 3 days?