Katydid™ and Kimberly™ are wood stoves and have been designed to burn regular cordwood, although given the size of their fireboxes, cordwood should be cut shorter than for stoves with larger fireboxes.
As well, many people burn extruded logs because they are convenient. However, never burn sawdust logs which contain waxes or paraffins.
Remember to always burn wood that has 20% moisture content or less, as verified by a moisture meter. Hard wood that has been well seasoned will produce far more heat and far less creosote than soft wood or wet wood.