Our washing machine drain pipe was a little plugged. A half-cup of water would back up during discharge. We went through several bottles of standard, supermarket Draino but they were useless. So, we decided to drive over to the Home Depot on the other side of the river.
I could walk around in a home improvement store for hours and hours. We didn't locate a brush snake for cleaning the drain but bought some strong, caustic drain cleaner. This is the kind that can hurt one's pipes if not flushed away after five minutes. Gloves were required. One application with just a few fluid ounces worked wonders. The problem has completely disappeared now.
We did spot a back wall with 60"-wide, shower-stall enclosure kits. What the hell do we need a tub for? I think a bathroom 'reno' should be on the cards now.
We also spent some time walking around the extensive gardening section. Boy, people seem really primed for a little planting!