Yeah, well I worry about collars getting caught and dogs getting hung up, scratched up, infected.
One thing that has worked for me is installing a visible, solar powered electric fence wire about 18 inches up from the bottom of the fence. Keeps the dogs from climbing or digging. And it worked, my girls would charge, put on the breaks and look for where that wire was and then stay far enough away to not get hit. Never got out of my fence.
I don't have that anymore, because my dogs are kenneled in my back yard in secure kennels when I am not home and the yard where the kennels are is fenced around. This keeps my dogs safe. I let them in the yard only when I am there, and they never bother my fences.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC