If you search this topic, there’s been lots of conversation about this.
My perspective is if you can source your own clients from outside Rover, you may choose to book them on your own and keep 100%. Then those who come from Rover, you’re earning business that you would not otherwise have because you did not connect with them despite your efforts (Distributing printed business cards, posting online on social media sites, possibly paying for other lead referral services, work from neighbors, word of mouth referrals, etc.). In that case, 80% is better than 0%.
If 80% of the booked total does not seem appropriate, I’d suggest considering raise your rate, while remaining in line with the local market.