SANFORD, Fla. -- Some Sanford homeowners say they're being terrorized by their neighbor's pit bulls. One of the dogs has already attacked a neighbor near Lily Court in Sanford.

Eyewitness News has learned the dogs' owners are not keeping their fence secure. Some of the breaks in the fence are big enough for an adult to easily climb through.

After many calls to animal control, neighbors say they want the fence fixed once and for all.

"Chasing children, attacking children. Chasing people onto their roofs. That can't be happening in a city bottom line," said neighborhood watch coordinator, Wanda Chandler.

Animal Services says a male pit bull attacked a neighbor last fall and that dog was put to sleep. However, since then, the two remaining pit bulls have been picked up by trappers three times.

Neighbors say, the dogs escaped many more times and killed cats, ducks and other small animals.

"My neighbors have told me and the neighborhood watch has said, 'be careful when you're coming down here. These dogs will chase you,'" said neighbor, Pat Doughty.

The dogs' owners were eager to blame everyone else.

"Neighbors say it's a real problem. They're getting out bothering people, killing cats," said WFTV reporter George Spencer.

"No. That's not the problem. The problem is our neighbors won't leave them alone," said the dogs' owner.

But residents say they want nothing more than a secure fence. They worry the dogs get more violent with each escape.

"Well, that's a concern too. Even a grown person can't get away from a pit bull. Let's face it," said Doughty.

The homeowners try to blame the bad fence on their landlord, but that's their aunt. Either way, Animal Services said it is every pet owner's responsibility to keep their animals on their property.

Pet owners are hit with fines that increase every time trappers pick up their pet.