Spring is here and we are uncovering our boats for the first time since Thanksgiving and seeing the squirrel damage. They eat right through 5/8 solid fiberglass like it’s nothing. Some guys are finding that the squirrels have chewed up wiring harnesses and upholstery. Haven’t heard of them damaging fuel tanks YET but. Question is has anyone run into this in ur area and how do you keep them out. One guy put bags of moth balls in his boat and when he uncovered the bags were gone. The critters took them off the boat cause they didn’t like the smell. All of the boats are in covered slips lifted 3-5 feet out of the water. They won’t go in our traps anymore so that’s not working and it’s in a townhouse community in a cove so shooting them is not ready an option. Please let me know if you’ve been successful with a treatment. Has anybody tried an electronic device this gives a high pitch to deter these tree rats?