Can you make a fleet enema (sodium bisphosphate) at home? heard about soapsuds

Fecal disimpaction: Enema liquids are widely varied: fleets is a brand of a chemical called phosphosoda or sodium phosphate. Coffee, soap suds, tap water, glycerin, gastrograffin as well as other more rare liquids have been used. They all work by stimulating bowel contraction by stretching the colon, and softening the stool by adding water. Safest would be to just use tap water, 500-1000ml for up to 3 days.