Diagnosing stubborn drain blockages

I’ve been running into more complex drain blockages lately that standard snakes just won’t budge. Last week, I had a case where a severe root intrusion was blocking a 4-inch line. I used a high-definition camera to pinpoint the issue. What methods or tools have you found effective in similar situations?

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Dealing with stubborn blockages, I’ve had success with hydro jetting to clear out root intrusions — it can really flush things out that a snake just can’t touch. Have you tried that on your 4-inch line, or do you have a specific method you favor?

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And i’ve had good results using a combination of hydro jetting and a root saw attachment when dealing with tree roots in pipes. It really helps get the tough stuff out without damaging the lines. Have you considered adding high-pressure water jets to your toolkit?

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I’ve had some luck with using an inspection robot for those tricky blockages. It feels like sending a little explorer into the pipes! Have you looked into that option? @kwhite56 might have some thoughts too.

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