A drain that keeps backing up is telling you something, and it is worth knowing what before you pay to have it cleared again.
Older homes: the pipe has narrowed
Cast iron drains in the original part of town build up a thick layer inside over the decades. A cable pushes a hole through the blockage but leaves that layer behind, which is why it comes back sooner each time. Jetting washes the pipe walls properly.
Newer homes: something went down it
In the newer neighborhoods the pipe is fine and blockages are almost always introduced — cooking grease in the kitchen, hair and soap in bathrooms, and wipes labeled flushable that really are not.
Hard water adds to it
Scale from the water here builds up alongside grease and soap residue inside drain lines. It is part of why kitchen and laundry drains in this area narrow faster than they do closer to the coast, and it responds much better to being washed out than poked through.
When it is worth looking inside
If the same drain has backed up more than once, a camera tells you whether you are cleaning a good pipe or putting off replacing a failing one.