how to deal with client who wont give a pickup time?

I ask for both approximate drop off and pick up times before booking.

That documents it, helps to determine if it's significantly over the 24 hours period, and allows me to plan when to take walks (especially last walk before going home) & packing up belongings. Sometimes, I'll explain that if we're out walking, it could take a half hour to an hour to return, if I don't know their approximate arrival time. If their time changes, I'll ask them to call or text me when they're on their way (30+ minutes advance notice if possible).

To be honest even if your are home 24 hrs you still need to know. Like a previous person stated you can be on a walk with their dog or taking a shower or just whatever, I never understand why people don’t tell you the time. I personally don’t like disruptions while prepping dinner or eating. I just polite to try and plan day, I can make a quick run to pickup something to eat, etc. I have asked clients to let me know approximately and as time gets closer to text me with better estimates or confirmation as I need to plan around it, get myself ready and my dogs ready.

My profile states I am home all the time. BUT, at the meet & greet I make it very clear that stays are based on a 24 hr per day...Drop off at 9am MUST pick up at 9am on the day of pick up...After (your leeway) time, doggy daycare Will be charged and if not picked up by 6pm, owner Must extend and pay for another night. If owner wants someone to pick up so as not to incur additional expenses, the dog must be picked up on time. You must make that clear at the meet & greet and remind them at the time of 1st time and repeat bookings. My customers are great! The ones that want me to get up at midnight/1am I send to rover match or they find another rover host themselves. I don't take offense, I need my sleep.

First off, it doesn't help that your profile states someone is at home with the dogs at all times. Therefore, your client isn't being unreasonable. What difference should it make?

Will the pickup time affect the parameters of the "nightly" boarding period? That is, will the dog have been in your care for more than 24 hours? Then, you have every right to have dropoff and pick-up times firmly established before finalizing the engagement. Another idea would be to establish dropoff and pick-up times in your profile, so that you can plan your day accordingly. It would have to state in your profile the window for these activities, as I believe some sitters do here on Rover.