when, if ever is it ok to use sellers agent?

[Craig Dieterich]

when looking for out of state investment properties, is it ok to call the listing agent? Seems like they would have the best info on the property being they obviously already been inside it and probably know everything there is to know about it, right? If I like the property, should I find another agent to use for the purchase, or is it ever ok to use the sellers agent?