There were plenty of acorns this spring, and now the chipmunks are driving people nuts. Their frenetic activities can be entertaining. But this summer in New England the varmints are making a nuisance of themselves, darting to and fro, digging holes in gardens, and tunneling under lawns. Plentiful acorns last fall meant there was still plenty of food on the ground when the chipmunks emerged from winter and got busy ...