Dog fouling

Since covid and the increase of dog ownership people are using the old railway line Adjacent to cenarth drive as a toilet for their dogs when they are going to run from the line the dogs are urinating on my gates on my front wall and after a few days the stench from the urine is making me sick I have to constantly wash down my gates and wall I have had to have my keys removed because the bottom half is rusted I’ve had to order new gates I have contacted these people but they give me nothing but abuse back the offence is not in the dog urinatingBut did not cleaning up after the dogsThis has been going on since the beginning of Corvid please help