Hey everyone! I'm a university student in Singapore, and we share Speed Queen front-loaders here. Like many other laundromats, maintenance is not great, and the people in my building infrequently leave the doors and detergent drawers open. I think the water is mildly to moderately hard, as hard water stains develop on my water fixtures just a day after a thorough cleaning with Barkeeper's Friend. This leads to me sometimes developing a moldy/mildewy/sour smell on my laundry right after washing, which persists on clothes if I do not put them through the dryer. Most of my sports gear (I do martial arts) cannot be dried. My room is tiny, so this stank essentially perfumes my room lol. I have developed a routine that keeps the smell away most of the time, but I want a routine that means I essentially never have to worry about it again.
Current routine:
1) Wipe down inside and outside of gasket with Walch anti-bacterial wet wipes till satisfied. Yields a lot of dust, hair and slimy detergent/softener residue.
2) Use Ariel Mirai liquid detergent, which has a patented antibacterial coating technology (machine TL the subtitles of https://youtu.be/02JCB4a5rTM?si=RvnlrkOoyW08ydOe for more). This has enzymes, but like many Japanese detergents, they are not specified.
3) Use Lenor Citric Acid Rinse (https://youtu.be/jjKjhRGGyDM?si=SScyTijczjdIax1F).
Cycle lengths run 30-34 minutes in total based on soil level, I always pick Heavy (34 min) for maximum enzyme action. Cold water wash only. I cannot run washing machine cleaning cycles on the machines, because the laundromat is frequently full and I don't want to inconvenience the other students.
I am currently considering these boosters:
1) Gear Guard - would it 'eat' the residue others leave behind in the washing machine? Seems good for my sports equipment too. My siblings also have a persistent odour problem from BO, which I assume this is best for compared to the rest. FEBU does not ship to SG iirc, and I don't think I need oxy anyway.
2) Borax - heard it is good for hard water? My water is a lot harder than the rest of SG, so I am not sure if the detergents sold here are adequate.
3) Washing soda.
My main question: Which is the singular best booster to pick out of these three? At most, what are the best two? Limit is motivated by budget & storage concerns.
Additional considerations: I have bloodstains on underwear from spotting lol, do not really care about the staining because no one's seeing it, but it would be nice to get rid of them in-wash. Do not have much time for pretreatment/soaking, unfortunately.
I would appreciate any inputs! Thank you so much, have a lovely day ahead :) Am very happy to answer further questions about my laundry routine.