Some reviewers mention fleas. Does this issue still exist to anyone's firsthand knowledge?

Haven't had any problem but our dog has flea protection.. Lots of sand so I can't see it being a problem.

Love this park too. Have not had an issue in the year and a half we have been going. My dog is on the 3 mtg pill. So either it works really well or they are not a problem.

I have heard that complaint but my dogs are not affected. Love this park!