The first thing you can do is identify crevices, cracks, or gaps where they could be coming from, as the more moisture that gathers there, the more likely you are to find them, and you can look out for droppings, skin molt, and yellow marks that are a big signifier.
Even if you find one of them, there is a chance that some can reproduce, and any dampness in your home, whether it be the joints, flooring, or guttering. If this is weak, insects like these have an easier time getting into your home.
It might be best for you to check in the night as this is when these insects are more active, so with a torch or with the bathroom light, you can catch them before they hide, as finding out where they come from at this stage can be difficult.
There are a few ways you can do this, and the thing they hate the most are smells of lavender, cinnamon, and citrus, so you can use these as a natural repellant and can be used alongside natural oils and diffusers, so you can keep these topped up, so they are effective.
There are some insect sprays and pellets that you can place in your bathroom, but it might not be a good idea if you have small children or pets as some of these can be toxic and cause illness if ingested, so look out for natural and scented solutions.
There are some insect sprays and pellets that you can place in your bathroom, but it might not be a good idea if you have small children or pets as some of these can be toxic and cause illness if ingested, so look out for natural and scented solutions.
You can also use sticking traps, rolled newspaper, or bleach which is known to be the most effective method. It can be poured directly onto the silverfish, which should kill them quickly, but heavy use of bleach can create a lot of fumes, so a ventilated space is recommended.
You can also use sticking traps, rolled newspaper, or bleach which is known to be the most effective method. It can be poured directly onto the silverfish, which should kill them quickly, but heavy use of bleach can create a lot of fumes, so a ventilated space is recommended.