DestroyAfter

Add this MonoBehaviour on an object to destroy it automatically (use it on bullet prefabs etc..)

Simple

using EODE.Wonderland;
using UnityEngine;

public class DestroyAfter : MonoBehaviour {
    public float Delay = 1f;

    async void Start() {
        await new WaitForSeconds(Delay);

        if (this == null) return;

        if (gameObject != null) gameObject.SafeDestroy();
    }
}

With animator

using EODE.Wonderland;
using UnityEngine;

public class DestroyAfter : MonoBehaviour {
    public float Delay = 1f;

    async void Start() {
        // animator
        var anim = GetComponent<Animator>();
        if (anim != null) {
            // if a Death parameter is found
            if (anim.HasParameter("Death")) {
                // wait for it
                await new WaitUntil(() => anim.GetBool("Death"));
            }
        }

        await new WaitForSeconds(Delay);

        if (this == null) return;

        if (gameObject != null) gameObject.SafeDestroy();
    }
}

With VFX

using System.Collections;
using System.Collections.Generic;
using DG.Tweening;
using EODE.Wonderland;
using UnityEngine;

public class DestroyAfterVFX : MonoBehaviour {
    public UnityEngine.VFX.VisualEffect VFX;
    public float Delay = 1f;
    public string VFXRateName = "Intensity";
    public float FadeDuration = 0.5f;
    public float DestroyDelay = 3f;

    void Start() {
        StartCoroutine(StopRoutine());
    }

    IEnumerator StopRoutine() {
        yield return new WaitForSeconds(Delay);

        float rate = 1f;
        DOTween.To(() => rate, v => {
            rate = v;
            VFX.SetFloat(VFXRateName, rate);
        }, 0f, FadeDuration);

        yield return new WaitForSeconds(0f);
        yield return new WaitForSeconds(FadeDuration + DestroyDelay);

        if (gameObject != null) gameObject.SafeDestroy();
    }
}