Something has cut two tomatos and three
egg plants off @ 2.5 inches off the ground

I lose a couple of plants every year the exact same way.
It happens at night. I sprinkle a wide swath of cayenne pepper around the
perimeter of the garden. Don't know for sure if it helps but the damage seems
to stop. I get the real cheap stuff from a local closeout store, big container,
$1.50.