· cleaning a toilet brush to remove bacteria after every use will help it last longer and prevent odors. How often should you replace your toilet brush? A brush with silicone bristles is more durable and can last up to a year. · some advice suggests replacing plastic toilet brushes every six months, but if you clean yours weekly there should be no need to replace it until the bristles become discoloured or bent out. Do you need to replace your toothbrush often? If you continue using a misshapen brush, the handle can permanently scratch the toilet bowl, leaving more spots for bacteria and stains to gather. · while you certainly can replace your toilet brush each year (and tetro said you should), if that isn’t realistic for you, you should at least replace it when the bristles are splayed or it’s looking grimy, maker said. · how often should you replace your toilet brush? · replace your toilet brush every six months or when the bristles are flattened, brittle, discolored, or smelly. You can also do some things to prolong the life of your brush and make it so that you dont have to get a new one twice a year. This frequency ensures that you’re maintaining a hygienic bathroom and preventing the buildup of bacteria and grime. Should you replace a toilet brush? Learn how to keep a toilet brush clean and when to replace a toilet brush. · drench says you should get a new brush every six months , unless youre using a silicone brush that keeps bacteria from getting trapped in the bristles. How long do toilet brushes last? As mentioned, a toilet brush can become worn down and filled with bacteria, so you should replace it twice per year. · however, a good rule of thumb is to replace your toilet bowl brush every 3-6 months.