You should pour hot water down your drain. Hot water will open up your drain quickly. If you don't have hot water put some on the stove and unclog away, and this should work.
Two common household items that can be used to unclog a clogged drain are vinegar and baking soda. These items can be purchased inexpensively if they are not already in the home.
you unclog it
Drano rots some products, but also jellifies others. It is not a good drain cleaner. To find better products go your plumbing wholesaler.
No, if it is clogged it must be replaced.
They share the same drain and it is becoming clogged. Drain cleaner in both drains should help.
uhhh you unclog it!
If the drains are truly clogged, there will be no breeding in them as no one will be able to fit in. If there are gaps and you find people breeding there, clog the drains even more.
They can. Pouring vinegar down a drain clogged with eggshells should unclog it as the vinegar dissolves the eggshells.
The drain is either not high enough or partly clogged. It should be about 36 inches up off floor. Adding a bit of ABS pipe is easy, or run a thin snake down and unclog it.
Water Jetting
There are thousands of sites where you can find information about clogged drains. They give great solutions for your problem.http://masterplumber.net/drain_problems.htm
If the converter is clogged it must be replaced. You cannot unclog it either on or off the vehicle.