My girl is on day 34 and due to have her frontline spot on. I have rung my vet and they said it was fine to put it on. Is there any point through her pregnancy or the 8 weeks after that you shouldn't use it because of harm to the puppies.

Thanks for any advice, Lynn

The spray can be used on the pups and bitch from two days old, but not the more concentrated spot on.  Wait until the liter is born and get teh spary.  Treat the bitch and wait until she is dry before letting ehr back in with the pups once theya re a few days old.  It lasts longer tow and will protect the pups too.

agree with brainless - but your vet should not have told you to use FL SO as it is not safe during pregnancy / lactation