Which one is good for Nantong toilet dredging and maintenance?

Which one is good for Nantong toilet dredging and maintenance? Generally, the toilet is cleared by individuals, as long as it can be cleared. . .

If I can't clear it, I won't pay.

However, as long as 100% is dredged, it will be easier and more convenient.

(If professional pipeline dredging personnel are hired, the price will be around 50-60 yuan; You can also buy a dredge yourself.