Clean satchel / school bag
Do you know that also your child is a year in school and the satchel / schoolbag looks like he has been through 5 years. The situation is similar with my daughter, the satchel looked terrible, but the easiest way to clean the knapsack is to put the knapsack in the dishwasher (55 degrees). Sounds stupid, but looks like new after that.
For strong stains, I would pretreat him with a detergent lye. It worked great for me. Would be glad if you write times if it worked out with you too.
