Author Topic: Crovect and Clik (Read 683 times)

moprabbit · « **on:** July 02, 2023, 01:27:11 pm »

If I want to use Crovect as a preventative measure against lice and Clik as a preventative measure against blowfly, is that possible without harm to my sheep and if so how long between application? Also just wondered if Crovect is so harmful to our skin, clothes etc does it sting the sheep's skin? Thank you.

shep53 · « **Reply #1 on:** July 02, 2023, 06:38:52 pm »

Lice tend to be a winter problem and blowfly a summer one , sheep skin is much thicker than ours ok after looking around the net the best i can come up with is human skin 0.5 mm on the eyelids to 4mm on the heel , found a research article that measured sheep skin and had a 3 yr old sheep with 3.5mm over all of the back and 2.5mm on the sides . While looking around i found out that after shearing a sheeps skin triples in thickness and the lanolin rises to keep the sheep warm , never too old to learn !

moprabbit · « **Reply #2 on:** July 02, 2023, 07:52:33 pm »

Thanks for that Shep, very interesting!

Badger Nadgers · « **Reply #3 on:** July 05, 2023, 11:33:45 pm »

I think of Clik ( Dicyclanil) as preventative, Crovect (cypermethrin) primarily to treat existing Yes,cypermethrin will do some protection, but realistically you're more likely to spray reactively when you suspect parasites from sheep behaviour rather than spraying regularly just in case..

The "generic" versions of cypermethrin are cheaper than branded Crovect. There isn't a generic of Dicyclanil AFAIK.
There are also alphcypermerthin products ("super crovect")

More importantly cypermerthin really only kills existing lice. Deltamerthin products reduce incidence of lice for a while.

See the SCOPS guidance at https://www.scops.org.uk/workspace/pdfs/product-options-table_2.pdf