Yes, we've heard this over and over again - with good reason!  No matter how wonderful your home is on the inside, it will be very difficult to get buyers in to go inside if the curb appeal is lacking.  I had one seller who decided that no landscaping (bare dirt) was the right idea - a blank slate for the buyer to do as they wish.  Buyers would drive up to the home with their agents and refuse to go inside!   So clean the walks, trim the shrubs, put up a seasonal wreath, add a bench - make it inviting!  It doesn't take a lot of money to make it appear clean & tidy!  It will "invite" more buyers into your home!