GAINES TOWNSHIP — Fifth-grader Kyle Dronkers kept a straight face while talking about recycling used toothbrushes to help the planet and raise money for Dutton Christian School. “Well, I wouldn’t recommend using them,” deadpanned Kyle, 10, as he flashed a toothy grin. But the grungy brushes will become eco-friendly products after they are shipped to Terracycle, a New Jersey-based company known for tackling previously un-recycled or hard-to-recycle waste. The Dutton students were recognized as being among TerraCycle’s top toothbrush and toothpaste-tube collectors for bringing in 1,800 items for the Colgate Oral Care Brigade.