[jheard]

Just topped up lambs with Crovect 5 and a half weeks after last dose. 2 hours later it has started raining (contrary to weather app 2 hrs ago!) Should I reapply or will it be ok?

Cheers!

First time lamb owner with one episode of flystrike under her belt, trying to avoid more!

[Tim W]

should be fine---according to the manufacturers it 'sets' fairly quickly and rain can even help spread it over the fleece evenly

[GrannyAching]

Crovect lasts six to eight weeks. It can be applied to damp fleece but it needs time to dry not to be washed off. I would not have thought there were many flies around and your original dose should still be effective. IMO you would be better just making sure your sheep are not dirty and checking in them  regularly until the end of September when you can decide whether you need a tick treatment.

Over taken by Tim but both saying no more treatment needed.