I Have Two Italian Greyhounds And They Drive Me Crazy!!!!?

these have to be the worse dogs ever they **** and piss on everything no matter how much you take them out, or walk them, or praise them they do not get it at all!! they now wear shock collars to keep them away for stuff in the house, or from jumping over gates but these dumb dogs seem to get into more trouble. i tried crate training everyone said oh they don’t like to go wear they sleep or eat, that was a bunch of bullcrap they **** and piss in the crate and lay in it and they are only in there 2hrs and they have their own crates that are perfect for their size i seriously want to just get rid of them but i spent so much money on them that i would be just throwing it all away! what can i do? i have to keep them i got them for my 4yr son but they are the worst dogs ever !!!!!

Ex Racing Greyhounds Prey Drive?

I have 2 retired greyhounds, one of my greys will take great interest in cats, rabbits e.t.c but nothing you dont expect, a pull on the lead maybe the odd bark.
A month ago we adopted a small blue ***** her prey drive is in overdrive 24/7 she is constantly looking out the window and if she sees a cat, shut the doors because she will run around so crazy she has nearly injured herself on the stairs before.
Lately its getting worse everytime we let her in the back garden she pounces up the fences (luckily its a very tall fence, she is unable to get over) she tries to jump up at the fence, she saw a hedgehog the other night and since then EVERY night she barks in the exact same place she saw it causing our other greyhound to get upset and start barking and then the whole neighbourhoods dogs are barking.
I know basic dog training, so I can deter her from the situation and get her inside for about 30 seconds then she paces around the house till we finally have to shut her away for bedtime.
Its a constant battle between her instinct and what she has learnt from racing, and our restraint and patience!
If anybody has anything they think we should try, I will sure give it ago!
ps. Muzzling her makes her even more hyper active, she runs around even more muzzled.
Shes 4 in October