I was visiting my son and his family recently. When as we got the 3 yr. old up from his nap we noticed he had used a dark blue marker on the light blue carpet in his room. My son wasn’t sure what to do. I went to my room and brought out the travel size Jingos. It took two applications but it removed it all. Next time I visited I couldn’t find any trace of the marker on the rug. Hurray for Jingos! I use it for everything. It really works!
Dark blue marker on the light blue carpet