From what I've found, the shot is more for pet owners as it can have adverse effects on future breedings with the bitch and 1 stick is only 40% chance of fertilization in most cases. My buddies going through the big D right now with custody battle, so I think he's just gonna have to wait things out.

Thanks for all the replies.

Quote Originally Posted by tasoschatz
http://www.virbac.co.uk/product.aspx?pid=124&product=67&&category=50#page= page-BRAND

That is injectable, there is also a pill but I will have to call my vet on Monday.