The answer to 'which is better drain trap or' is that a drain trap is generally better than a drain. A drain trap is a U-shaped pipe that holds water, creating a seal to prevent sewer gases from entering the home. This helps improve indoor air quality and prevent odors. Drain traps are required by most building codes and are an essential part of a properly functioning plumbing system.
Drain traps offer several benefits over a simple drain. They help prevent clogs by catching debris, they create a barrier against pests and rodents entering the home through the drain, and they can help reduce water usage compared to a drain that allows water to continuously flow down the pipe. Drain traps are relatively inexpensive and easy for a professional plumber to install, making them a cost-effective solution for most homes.