Accepting But Still Helping

Hi, I’m visiting my parents every 3 months since we leave in different countries. I love them deeply and always look forward to seeing them. Unfortunately, when arriving, I almost always find myself being shocked by the level of disorganization and even dirtiness in their home, which also used to be mine… I’ve been thinking many times about taking a week or two of leave from my work and come and help them sort, organize, and clean everything up, but I want to make sure I do it firstly for them and not in order to make myself feel better. Any suggestions to help me clean my thoughts? Thank you!