Infection is rare, but has been reported in individuals with predisposing conditions. Here we describe the case of a woman with pyelonephritis and bacteremia in which Lactobacillus delbrueckii was determined to be the causative agent.
you should mix the alkaline cleaning solution with hot water and apply it to the travertine tile floor with a soft scrubbing sponge do not use any type of aggressive scrub pad or scrub brush on you travertine tile floor this is because travertine is a dense stone but the finish can easily be marred by using aggressive scrub pads or brushes soft white scrubbing brushes work great to scrub the travertine and the grout lines without damaging the polished or honed finish of your travertine tile floor
Remove a piece of tile from the solution. Scrub the mortar with a scrub brush to remove the residue the acid has loosened. Rinse the piece of tile with clean water and allow the piece to dry for at least 24 hours before using it. Repeat the process if necessary. Apply muriatic acid directly to the back of a piece of tile if the mortar is particularly thick, such as more than 1/8 inch. Use a paint brush and coat the mortar with pure acid. As it loosens the concrete, use your scrub brush with water to gently scrub and remove the excess. Apply more as needed.