My house is a year and a half old. The back yard isn't huge but plenty of room for my 2 medium sized yellow labs. One dog is almost 3 years old and the other about 2 years old. Well I just finally was able to afford getting my back yard fenced in so they can enjoy being outside. Well the first week of having the fence was great. They love being able to just go outside when they have too. But this week my younger dog has begun to dig. I can't have her ruining my yard by diggin holes all over. what can I do to get her to stop??? I got the fence so I didn't have to spend hours a day walking them and they can be outside where they love to be. Now not that I never walk them anymore. I like taking a nice walk with them But I dont' alway's have time every day to spend walking them. Is there something I can do to correct this behaviour? It's not like she's trying to burry anything. She just started digging for no reason. She has a few toys out there. I mean I can fix the holes I suppose but for one she will dig more holes then I can fix or just redig holes that have seed in them. If anyone has suggestions I'd love to hear them. I don't know what to do about this.

Thanks in advance.