i'm sorry but i have to laugh, we're going through the SAME thing with caine right now. he found a way to squeeze between where 4 years connect (looks like a + and right in the middle is a small hole) and he gets into our neighbors yard. unfortunately, because it is a shared corner with 3 other yards, a hot wire isn't an option, and neither is replacing that piece of fence because it is also shared. we tried to "mend" it but that failed. we tried blocking it, didn't work. so now, we are desperate for other options and we are going to go to lowes and see what we can find. good luck, keep us posted!