Is there a more durable way to catch washing machine lint?
We purchased a washable filter for the drain of our washing machine, not so much as to prevent clogging the utility sink (separate drain) but to protect the septic tank and drain field.

I understand that this is not a proper location for recommendations, but if you search for filtrol 160, you may be in luck. I purchased a second filter sock for the unit, allowing me to wash off the more recently used filter while a fresh one is placed.

Clearly you won't want to rinse the filter off in your utility sink, or in any location which may continue the clogging problem. I wait until the weather is good, turn the sock inside out and hose it with the garden hose on high pressure stream. The gunk in the sock is mostly dirt, although there's likely some synthetic fibers. I don't think there's enough to be an environmental concern when washed while outside.