All of the drains in the house are slow and sluggish. What do I do?
Drain speed is a function of ventilation. Often we have seen where the vent pipe exiting the roof has become restricted with things like leaves, squirrel nests, bird nests, even spider webs that have caught debris. You should make sure that the flow of air into the plumbing system is good and remains constant. A wire cage made to fit into the end of a vent pipe removes most of these annoyances. These are readily available at most building supply businesses.