SAN ANTONIO -

Flushable wipes are marketed as a modern-day convenience, but for SAWS, plumbers and some homeowners, they've become a pain in the  behind.

SAWS sewer system crews have to unclog pipes and pumps with mounds of so-called flushable wipes. It is a painstaking, disgusting and expensive job.

Plumber Kenny Valentin makes a lot of house calls to unclog toilets and backed up sewer lines, and often the culprit is flushable wipes.

"You can spend $3, $4, $5 getting wipes, but at the end, if you flush those into the toilet, you're going to end up paying hundreds of dollars for plumbing services," Valentin said.

Consumer Reports checked out four flushable wipes from Cottonelle, Charmin, Scott and Equate. They are are marketed as flushable.  Claims include "sewer and septic safe" and "breaks up after flushing."

While toilet paper broke down quickly soaked in liquid for 10 minutes, flushable wipes did not break down at all. Even after running in a mixer for 10 minutes, they did not break apart.

"Our advice: If you use these products, don't flush them down the toilet," Consumer Reports' Bernie Deitrick said.

Consumer Reports did find that after soaking overnight for 12 hours, two of the product, the Cottonelle and Scott, did break down.