A Vented Running trap with two clean outs or a P trap.
We don't as many model codes will ban their use
A bell trap is used in floor drains. Its use is prohibited. It is illegal according to the National Plumbing Code.
a "p" trap
In plumbing, a trap is a U-, S-, or J-shaped pipe located below or within a plumbing fixture.
An S trap is not allowed in a plumbing system. Only a P-Trap
depends on the mammal But for most small mammals the best trap to use is a mouse trap. ;)
Turn on the the water to the fixture. And let in run.
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One trap for each fixture and one main trap prior to leaving the structure
A P trap goes thru the wall, an S trap goes thru the floor.
building codes in the jurisdiction may require you to use a certain type of trap in certain plumbing designs.A bell trap is used in floor drains (although this particular trap is sometimes erroneously installed in a drainage system).Answers.comAnswers.comAnswers.com. So is a drum trap. S traps are much more common.A p trap is used for sinks
"P" Trap after that would be running traps