BASF Nutra-Sol® 59013352 2 lb Tank Cleaner Rinsing Agent. Nutra-Sol tank cleaner powerfully and safely removes pesticide residues from your spray equipment. It effectively cleans and removes residues left by 2,4-Ds, sulfonylureas and other hard-to-remove residues that are extremely active at low rates. Nutra-Sol helps professional applicators maintain the integrity of their spray application equipment. Use Nutra-Sol with confidence to ensure all working parts, including tanks, pumps, hoses, valves and nozzles, finish clean at the end of the work day.