[Highland Park] Dog Problems

Please when you walk your dogs past others landscaping and/or lawns do not let then urinate on shrubbery! It kills them!!!!!!!!!! We have had to replace expensive bushes every year because of this issue. We have a little "no dogs permitted" sign to remind people but it does not seem to work for some. They think if it not solid waste that it is alright. When we have caught the people in the act we have spoken to the offenders but they act like we are being rude!