Another option is to go with a non-electric trimmer to avoid the hassle of plugging in or charging your trimmer. The Gillette power fusion razor and trimmer is a non-electric option that can be purchased in stores and online and it comes with guards for setting the length.
If you do trim your hair in the bath tub, a damp paper towel can be used to collect the hair from the sides and base of the tub so you can dispose of it in the trash to keep it from going down the drain.
Damp hair–not soaking wet hair–maybe easier to trim compared to dry hair, but this varies based on length and type of hair. For example, it may be easier to trim curly and especially long hair if you first dampen the hair. [3] X Research source Hair becomes longer when wet. For example, if you trim your wet leg hair to exactly 1/2 an inch, the length of your dry leg hair will be less than 1/2 an inch. [4] X Research source
Make sure to brush your hair again before re-trimming. A less thorough trimming may actually look more natural which could be preferable if you’re aiming to avoid looking overly groomed.
Shorter hair is also easier on the trimmer. If you trim your hair more often, this will increase the longevity of the trimmer because it will be less likely to get stuck and won’t have to work as hard to cut through your hair.
Use a brush or towel to brush loose hairs off of your body after trimming. A shower afterwards is also a good idea. Clean the guard(s) by rinsing them off or by blowing on them. Sweep the area to make sure there’s no hair remaining on the floor.