Thank you for posting your feedback. We are sorry to see your low star review on DAP Plastic Wood Professional Wood Filler. Based on your description of the product’s texture/consistency and behavior, it would appear that you may have purchased aged/expired product (newly purchased may not necessarily be of recent manufacture). DAP Plastic Wood (all versions) are designed and tested for stain and paint/coating performance. As indicated on the package label and supporting product literature: "if staining, test wood filler with desired stain on scrap wood before filling to ensure desired stain color." and "If wood is to be stained, stain before filling with wood filler. Then use stain to develop desired final finish.” If the pre-stained wood and wood filler are not closely matched in color, an acceptable color match may not be achieved when applying the final coats of stain. Because you did not provide enough details regarding your attempted application, it is difficult to provide you with more specific product usage guidance in this format. Should wish to provide these details, so that we can offer you more specific product usage guidance or would like to verify the age of your product, please feel free to contact DAP’s Technical Customer Service Department at 888-327-8477. When calling in please be sure to have the package (squeeze tube) available, as we will need to obtain production information from it.