House Sitting Requests When You're Already Booked in Your Home?

I have had an issue with receiving house sitting requests when I am already fully booked with stays in my home. I hate turning people away but that is impossible to be at two places at once. I asked Rover why they do not block the dates off that we are already booked in our home and they said it's not possible at this time and we have to do it manually. Anyone else have this issue? It would take me forever to block off all the dates I am already booked in the future in my home!