I don't use drip clean. I did purchase some PeKacid which is the same thing but when I used it I didn't like the results. Plants didn't look happy. I've never had any clogs or anything using blumats. People say you need runoff but I've never had problems without. But I only use a solution of calcium nitrate, micronutrients, and monopottasium phosphate. Maybe some potassium phosphate or magnesium sulfate on occasion. I keep it simple. If you use some of those gunky nutrients then maybe you'll have issues. I also occasionally add water soluble fulvic/humic acid.
Never had a problem or need for drip clean or any other product like it.