Ok I'll add the pink one to my shopping list. I used Coopers the year before last although not on the udders. It was ok but I wasn't jumpng up and down. Gives the coat a nice shine.I just use the pink one, I don't use Deet at all as it looks quite harsh. Coopers is supposed to be very good although have to apply it with gloves so I wouldn't say it'd be any good for broken skin or udders.
Like pfball I use the snuggy hoods rug with udder cover
I've got a couple of sets of snuggy hoods but find them a bit heavy for very hot weather. The trouble with using the udder covers is I find they rub the insides of her back legs especially when wet with pee making things even worse.
I'm mainly using the Pagony and the Van meulankemp (sic?) from Solva and am experimenting with a snuggy hoods sweet itch head to go with them but the fitting on this is a pain - it's being sent back before spring to get some alterations done. The Cornstones hood looks good.