We periodically visit our parents' house and help clean up there. But this year there is no such opportunity. How to solve this situation?

And why do you even worry about what is not cleaned in your parents' house? It seems to me that the owners of the house should think about it. And if they can't keep the house clean and tidy, you can invite private domestic cleaners. Here is a link to one such company https://briiz.com.mt/ I am sure they can solve your problem.