We have a 13' x 28' water containment mat we purchased from Detail King to wash vehicles in our shop. Since our shop doesn't have a floor drain. We needed a way to transfer water from the mat to the toilet. We purchased a water removal transfer pump from amazon. This model works the best of all we have tested at removing water, even when it is dirty.

Detail King Containment Mat https://amzn.to/3UYFHCV
Water Transfer Pump https://amzn.to/3TDtJxG