This practice is abhorrent!
In Australia, with the ginger testing kit being available, I thought it had abated. As the test is done via the anus, I know of some very well known high flyers!!!! that administer it in the vulva!! I have seen it being heated and scrubbed on with a toohbrush to make it more effective, and on mentioning my disgust was told to mind my own business!! Have also reported it to the stewards, but nothing was done!!!
There are very well known top breeders doing this, you would be surprised!
Some people will resort to anything just to get a ribbon, it rates right up there with cruelty and abuse.