diff --git a/src/select/mod.rs b/src/select/mod.rs
index 53477cf..8778e5c 100644
--- a/src/select/mod.rs
+++ b/src/select/mod.rs
@@ -1,9 +1,4 @@
-use crate::{
-    teleport::Teleport,
-    theme::use_theme,
-    utils::{dom::window_event_listener, mount_style::mount_style},
-    Theme,
-};
+use crate::{teleport::Teleport, theme::use_theme, utils::mount_style::mount_style, Theme};
 use leptos::*;
 use std::hash::Hash;
 use stylers::style_sheet_str;
@@ -73,7 +68,7 @@ where
         }
         is_show_popover.set(false);
     });
-    on_cleanup(timer);
+    on_cleanup(move || timer.remove());
 
     let temp_options = options.clone();
     let select_option_label = create_memo(move |_| match value.get() {
diff --git a/src/slider/mod.rs b/src/slider/mod.rs
index 783385b..1daa6c6 100644
--- a/src/slider/mod.rs
+++ b/src/slider/mod.rs
@@ -1,8 +1,4 @@
-use crate::{
-    theme::use_theme,
-    utils::{dom::window_event_listener, mount_style::mount_style},
-    Theme,
-};
+use crate::{theme::use_theme, utils::mount_style::mount_style, Theme};
 use leptos::*;
 use stylers::style_sheet_str;
 use wasm_bindgen::JsCast;
@@ -47,7 +43,7 @@ pub fn Slider(
     let on_mouse_up = window_event_listener(ev::mouseup, move |_| {
         set_mouse_move.set(false);
     });
-    on_cleanup(on_mouse_up);
+    on_cleanup(move || on_mouse_up.remove());
 
     let on_mouse_move = window_event_listener(ev::mousemove, move |ev| {
         if is_mouse_move.get_untracked() {
@@ -68,7 +64,7 @@ pub fn Slider(
             };
         }
     });
-    on_cleanup(on_mouse_move);
+    on_cleanup(move || on_mouse_move.remove());
 
     view! { class=class_name,
         <div class="melt-slider" style=move || css_vars.get()>
diff --git a/src/utils/dom.rs b/src/utils/dom.rs
deleted file mode 100644
index 22cd95b..0000000
--- a/src/utils/dom.rs
+++ /dev/null
@@ -1,28 +0,0 @@
-use leptos::window;
-use leptos_dom::ev;
-use std::borrow::Cow;
-use wasm_bindgen::{prelude::Closure, JsCast};
-
-pub fn window_event_listener<E: ev::EventDescriptor + 'static>(
-    event: E,
-    cb: impl Fn(E::EventType) + 'static,
-) -> impl FnOnce() -> ()
-where
-    E::EventType: JsCast,
-{
-    fn wel(
-        cb: Box<dyn FnMut(web_sys::Event)>,
-        event_name: Cow<'static, str>,
-    ) -> impl FnOnce() -> () + 'static {
-        let cb = Closure::wrap(cb).into_js_value();
-        _ = window().add_event_listener_with_callback(&event_name, cb.unchecked_ref());
-        move || {
-            _ = window().remove_event_listener_with_callback(&event_name, cb.unchecked_ref());
-        }
-    }
-
-    wel(
-        Box::new(move |e| cb(e.unchecked_into::<E::EventType>())),
-        event.name(),
-    )
-}
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 6a1aceb..f8a5cd4 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -1,2 +1 @@
-pub mod dom;
 pub(crate) mod mount_style;