@bythewell - If you feel like getting creative most things can be made at home with common ingredients. I don't think there's anything crazy or strange about that. It's only in the last few decades that we've even had the option to buy things like cleaners from a supermarket, rather than making them in a household.
It's just that most people don't have the time to do this. It's easier to spend a couple more dollars and pick up a product from the supermarket.