Answer: Oh, how infuriating! The only other thing I can think of that would wreak such havoc is cutworms, but they usually only cut the seedlings off at the soil surface, and leave the plant there like a toppled tree.
It sounds like a couple of tomcats would have their paws full with that rodent circus! How about covering your crops with fabric row covers? It's worked for other gardeners I know. You eventually have to take to covers off to allow bees to pollinate, but by that time, plants are past their succulent, juvenlie stage and less attractive to woodchucks and chipmunks. I suggest that you place fabric over hoops and anchor it to the ground with planks or 2x4s. As for the strawberry plants, try a fine-mesh bird netting over hoops, anchored the same way. It should allow entry for the bees, but exclude the chipmunks. And as an added security measure, make sure there are no gaps under the fence. It's astonishing how small a hole a hefty woodchuck can squeeze through! Both rodents also climb, and you can foil them by attaching a piece of chicken around the top edge of the solid fence so that it flops outward. If the critters climb the fence, their weight will pull the loose fencing backwards and drop them to the ground. I hope you get to enjoy some of that produce next year - or even this fall!
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