Your traps could be being siphoned from improper venting, an "S" trap on one of your fixtures, or a cracked trap below slab level. It could also be the wax seal around your toilets. It is difficult to say without seeing your house.
Awful.
Awful.
through drains
The purpose of a sewer pipe is to collect waste from drains and peoples homes and transport it through the sewer system to the sewer plant. There it is treated and the water is recycled.
Where ever they sell Sewer piping
No
you could always pour water down it to flush the bugs into a sewer Pouring bleach down the drains can also help, any cheap bleach found at the supermarket should work fine.
Every home owner should be knowledgeable about their sewers and drains. It is necessary to have them cleaned periodically. The main sewer line should be clean and drains should be grime-free.
Storm sewer is crossed with the sanitary sewer or the washer drains into the storm sewer. Either way the storm sewer is likely blocked somewhere.
Clogs or blockages... But most likely , if it drains well, and "bloops" or gurgles while draining it usually means that the vent part of the waste system is trying to draw air into the pipe and is having a difficult time. This could either be poor installation and design or a blockage in the vent part of the system.
House drain ends at the city sewer. City sewer ends at the waste treatment plant. Waste treatment ends at the nearest river.
in his secret bunker down the sewer drains