Dexas MudBuster Portable Dog Paw Washer/Paw Cleaner, Medium, Matte Black- Special Edition

Is this really just for dog paws?

Does this have a lid so the water won't spill out when in transit? I may not always have a handy water source at the time she has muddy paws.

My dog's paws are about 2-1/2" wide. Which size would be appropriate when taking into account the silicone insert?

has anyone's NOT liked it?