Some chemicals are harsh, so put on gloves to protect your skin. Don't pick a sponge that's too abrasive, such as steel wool. Stick with a scrubbing sponge. Otherwise, you may take the finish off your tub. Additionally, it's helpful to use a toothbrush or grout brush to get into the nooks and crannies, as well as around the faucets. Magic Erasers or similar products can be perfect for acrylic bathtubs which scratch easily. Magic erasers are relatively inexpensive and can be bought from local hardware stores or supermarkets. All you need to do to use one is wet the eraser, scrub the tub, and rinse well afterwards. You have many options available to you. Which one you choose depends on your preference. For instance, you could use Lysol Bathroom Cleaner, Clorox Clean-Up, or Scrubbing Bubbles. Each cleaner is a little bit different. For it to be the most effective, you need to follow what the instructions say. For instance, you may need to spray or scrub a solution on and leave it for a period of time. Bathroom cleaners can be quite overpowering so make sure the room is well-ventilated and if necessary, leave the room for a time to prevent inhaling any dangerous fumes. Products such as Scrubbing Bubbles Mega Shower Cleaner are meant to deep clean your shower once a month. To use, apply the product to the tub and walls. Leave it on for 3 minutes. Wash away the product.

Summary: Put on gloves. Choose a sponge and brush. Pick a cleaning product. Read the manufacturer's instructions. Use a once-a-month cleaner.

The general tendency of a kicker is to shoot the ball opposite the goalie. Knowing this tendency can help you more effectively anticipate where a kicker will shoot the ball. One study showed that almost 70% of penalty kicks taken went to the side opposite the kicker's dominant foot: right-footed players kicked to their left and the keeper's right and vice versa. This mimics the natural swing of the foot across the body because it is difficult to shoot to the opposite corner using an instep kick. If you can't read the player or the ball, it's best to assume that you should go right for a right-footed kicker and left for a left footer. Just as it's important to pay attention to the other team's players during the game, it's also wise to study them before you meet them on the field. This will give you an idea of how they generally play and also highlight any playing patterns by individual players. Watch videos of the other teams matches to acquaint yourself with their playing style. If you are near your opposing team or cannot get a video of them playing, visit one of their games. Studying the motions of a player on a computer can also improve your ability to read the movements a shooter makes because these give away clues about how they will play. Knowing how to anticipate any body's movement is something that can help any goalkeeper defend shots on goal. By learning the principles of kinesiology, or the study of movement, you can become a much more effective goalie, especially against penalty kicks. Most colleges offer courses in kinesiology, though you can also find online courses at places like the University of Utah or Sam Houston State University.
Summary: Know the penalty shot statistics. Study the opposite team before the match. Learn about kinesiology.