Never for Scheduling Tasks!
Never use task reminders to schedule tasks at specific times. Instead, schedule those tasks in your calendar with all other appointments, so you can plan and manage your schedule in a single view.
In Remember the Milk, task alerts are optional reminders about tasks with hard dates for today. You do NOT need these for your daily review. Dismiss them all when you look at them.
Do not use task reminder times in your tasks. This adds complexity and encourages you to not check your lists.
Make sure you set up task reminders properly before using them.