Oh rats! Dear readers, please indulge me. My comments first, before the questions. Every spring I get numerous emails about squirrels, mice, groundhogs (they prefer to be called woodchucks), rabbits and unidentified chewing critters. And every year, when I answer one reader’s query, I get scads of suggested solutions — some sweet and some not so much. Here, with no more bloviating, are samples from my inbox. Q: Regarding rodents building nests in car engines, I had a big rodents nest that I had to chip out by hand! Very nasty. I then took it to the repair shop. They suggested peppermints. I me…