Hey girl try Clorox on those sheets I know you don’t like bleach I hate bleach so I feel ya lol but Clorox has some new scents and it smells amazing and I think Clorox will do the job they also have bleach tablets I really like those they are small no mess easy to use and like 2 bucks for like 10 tabs at Walmart they work really well if you get the tabs put like 2 or 3 tabs and your oxy and the white brite borax use extra borax all things whitening lol have your tried peroxide with baking soda girl baking soda works really well and then add those bleach tabs I’d let them dissolve in the water first let the machine swish everything up then add the sheets I also heard Foca powder is really good on whites heck I’d add Foca to the mix maybe 1 scoop let the machine swish up really good with your bedding I’d say let it run on a heavy duty cycle for about 20 minutes then pause it let them soak for an hour or so I hope you try it and it works!! cheaper than buying a new set frfr tho let me know if you try it and if it worked for you! ❤