Both my Children Attacked by off-leash dogs

My family has had nothing but negative experiences with off-leash dogs in public parks. On separate occasions both my children have been attacked by off-leash dogs in public areas of parks. The 1% of dog owners who will not keep their animals in control are too risky for other park users - off leash dogs should be in fenced areas only. My family no longer feels comfortable using parks that are shared with off-leash dogs.