Plumber's opinion needed

There are a lot of plumbers on streeteasy. I definitely wouldn't use Google local search, or the yellow pages to actually call a plumber - too expensive when you can get expert advice here for free. Maybe if you are lucky, NYCMatt will tell you that it is your fault and that his grandmother never had a clogged sink.

who is a plumber?

bump, to add i've used drano (i know its bad) and "snakes" to no end on my bathtub yet yields a slow drain, any cheap solution to this problem? yelp/google reviews are slim for plumbers.

Disuse typically means the water in the P-trap under the sink sits for a long time, rather than being flushed/refreshed through regular use. That could mean more sediment building up and hardening on the pipe walls in the trap. (Or if the trap water evaporates, sediment could be drying out and hardening that way.)

For prevention, be sure to not send too much junk down the drain, and run water to flush it out before leaving for a long period. Maybe try filling the trap with mineral oil before leaving (doesn't evaporate so fast). Or just have someone come replace the drain line between the sink basin and the wall -- easy work for any plumber (or even a handyman, if you aren't constrained by building/licensing requirements).

Drain will get clogged if long time without being used or there remains too many grease, hair or wasting food.Maybe a drain cleaner like bio-clean or pure lye will help you, but I will try the hot water or diy drain cleaner with baking soda and vinegar firstly.
If you want more solutions, see->> www.cfone.net/best-drain-cleaner-guide-for-clog-free

Why oh why do people insist on reviving long-dead threads?? argh.

I take the manly approach and use a plunger first then the snake then move on to the more chemical options. Its amazing what a little elbow grease can accomplish.

In general caustic drain cleaners should be avoided. Try a degreaser first.

Just make sure to do a Google search for reviews. Plumbers and any contractors are very dangerous to have in your home.

My kitchen sink also clogs frequently. Many times, I hire commercial plumber https://allweekplumbing.com/commercial-plumbing-nj.html who solves the problem.
Many ways like using a plunger, using vinegar and baking soda, etc. can also solve the problem of sink clogs.