Lysol Concentrate Dilution Calculator

Which Lysol concentrate this page covers, and how to dilute it

Lysol sells more than one concentrated cleaner, and the numbers differ, so it helps to be precise. This page covers Lysol Disinfectant Concentrate (the 12 oz bottle). Its published directions are 1-1/4 fluid ounces (2-1/2 tablespoons) per gallon of warm water for cleaning and deodorizing, and 2-1/2 fluid ounces (5 tablespoons) per quart for disinfecting, with the solution left on the surface for 10 minutes.

It does not cover other Lysol concentrates or multi-surface cleaners. Those are different products with their own labels, and some carry disinfectant claims with their own contact times. If your bottle is one of those, use its label.

Notice the two directions are quite different in strength. The disinfecting mix is about 1 part concentrate to 12.8 parts water, roughly seven times stronger than the cleaning mix. Disinfecting also depends on time: the surface should stay visibly wet for the full contact time, and heavily soiled surfaces should be cleaned first, since dirt uses up disinfectant.

Use it on hard, nonporous surfaces the label lists, and test a hidden spot on anything delicate. Check the label for food-contact instructions and rinse with fresh water if in doubt, and keep it away from unsealed wood and porous materials.

Never mix Lysol with bleach, ammonia or other cleaners. Combining cleaners can release harmful gases. If it already happened, move to fresh air, open windows, and call Poison Help at 1-800-222-1222 (US); call 911 for trouble breathing, chest pain or collapse. Label directions change by version, so confirm on your bottle before you mix.

A quart is a convenient batch for disinfecting because a small amount is used quickly and mixed fresh. Pour the quart of water first, add the 5 tablespoons of concentrate, and stir gently. Wipe with a cloth or sponge you can wring, keep the surface wet for the full time on the label, and wear gloves if the label calls for them.

Where these numbers come from

The formulas and default values in this calculator are based on:

• Lysol Disinfectant Concentrate product page and directions, 12 oz bottle (Reckitt, lysol.com)
• America's Poison Centers. Note: Lysol concentrate products differ, confirm on your bottle's label

This is general household-cleaning guidance and planning math, not medical or professional advice. Product formulas change, so the label on your bottle always wins: follow its directions and warnings, test a hidden spot first, and never mix cleaning products. For a poisoning emergency call Poison Help at 1-800-222-1222 (US), or 911 if someone has trouble breathing.