I've done this to 36 cages and feel that I've become an expert so I thought I would share.
I purchase flashing at Menards (you can also get it at Lowe's, Home Depot, etc.) I cut the flashing 4-1/4" tall. I bend the bottom 1/4" in like the letter L so that any urine travels down the tall part and then is forced "in" just a 1/4" so that it lands in the pan for sure. My cages are 24"x24" so I cut the length 23-1/2" and make sure it's tight in the back corners. I then use a hole punch (or even use a nail) to make 5 even spaced holes along the top (about 1/8" down). I attach with mechanics wire from Harbor Freight. The wire is thick enough to prevent pregnant does that like to dig from pulling the urine guards off the cage.
These are extremely inexpensive to make and work like a charm!
You can see I also make my own stackable cages with angle iron for the legs.
I purchase flashing at Menards (you can also get it at Lowe's, Home Depot, etc.) I cut the flashing 4-1/4" tall. I bend the bottom 1/4" in like the letter L so that any urine travels down the tall part and then is forced "in" just a 1/4" so that it lands in the pan for sure. My cages are 24"x24" so I cut the length 23-1/2" and make sure it's tight in the back corners. I then use a hole punch (or even use a nail) to make 5 even spaced holes along the top (about 1/8" down). I attach with mechanics wire from Harbor Freight. The wire is thick enough to prevent pregnant does that like to dig from pulling the urine guards off the cage.
These are extremely inexpensive to make and work like a charm!
You can see I also make my own stackable cages with angle iron for the legs.
