could anyone tell me when the injection is done, this is the first time i will be using it mainly because one of my girls missed twice after having a normal pregnancy and lovely litter thanks

It can be done within quite a large timescale really - either a week before mating up to 10 days after and about 7/10 days prior to whelping - if my memory serves me correctly and they haven't changed instructions etc

We've just used it for the first time. The first injection we had done 2 days after the second mating, but it can be done up to 14 days after, she'll have the 2nd injection 10 - 14 days before the expected due date (assuming she is in whelp)

Have always used it and in same time frame others have mentioned