Based on this score, the best time of year to visit Nakuru for hot-weather activities is from mid January to mid March, with a peak score in the third week of February.
Step 1 - Rinsing. Especially for larger neoprene-based items, you should be rinsing for at least three or four minutes straight after every use. Try to rinse using clean, fresh water applied in a directed spray. A shower head with a removable handle will work for smaller items, so you can direct the spray in the tub.
Then set the items in the sun. The garment should be kept damp using cold water. Leave the item in the sun all day, then wash it as usual, and let it air dry. If you still need to remove collar stain rings from your dress shirts, you can use hydrogen peroxide on your white fabrics.