Ma ke ʻano he mea hoʻomomona kūpono, he hopena ko ka urea phosphate i nā mea kanu i ka wā mua a me ka wā waena, ʻoi aku ka maikaʻi ma mua o nā mea kanu kuʻuna e like me ka urea, ka amonium phosphate, a me ka potassium dihydrogen phosphate.