
Hot Tub Serum Myrtle | Oil-Absorbing Spa Sponge
Myrtle is part of Hot Tub Serum's line of oil-absorbing sponges — a simple, chemical-free way to keep your spa water clean. It floats on the surface and quietly soaks up the body oils, lotions, makeup, and other contaminants bathers leave behind, capturing them before they clog your filter or form scum lines on the shell.
Those oils are the root of some of the most common spa annoyances. Left in the water, they collect at the surface and along the waterline, creating that greasy scum ring, and they get pulled into your filter where they clog the pleats and shorten cartridge life. A floating absorber intercepts them at the surface — exactly where they gather — so they never reach the shell or the filter in the first place.
Crafted with a premium 3D air mesh skin that maximizes surface contact for superior absorption, Myrtle is reusable and washable, delivering powerful cleaning action with no chemicals and no hassle. It's one of the easiest upgrades you can make to your maintenance routine: just drop it in and let it work.
Hot Tub Serum®
Myrtle is part of Hot Tub Serum's line of oil-absorbing sponges — a simple, chemical-free way to keep your spa water clean. It floats on the surface and quietly soaks up the body oils, lotions, makeup, and other contaminants bathers leave behind, capturing them before they clog your filter or form scum lines on the shell.
Those oils are the root of some of the most common spa annoyances. Left in the water, they collect at the surface and along the waterline, creating that greasy scum ring, and they get pulled into your filter where they clog the pleats and shorten cartridge life. A floating absorber intercepts them at the surface — exactly where they gather — so they never reach the shell or the filter in the first place.
Crafted with a premium 3D air mesh skin that maximizes surface contact for superior absorption, Myrtle is reusable and washable, delivering powerful cleaning action with no chemicals and no hassle. It's one of the easiest upgrades you can make to your maintenance routine: just drop it in and let it work.
Hot Tub Serum®
Original: $27.95
-65%$27.95
$9.78Description
Myrtle is part of Hot Tub Serum's line of oil-absorbing sponges — a simple, chemical-free way to keep your spa water clean. It floats on the surface and quietly soaks up the body oils, lotions, makeup, and other contaminants bathers leave behind, capturing them before they clog your filter or form scum lines on the shell.
Those oils are the root of some of the most common spa annoyances. Left in the water, they collect at the surface and along the waterline, creating that greasy scum ring, and they get pulled into your filter where they clog the pleats and shorten cartridge life. A floating absorber intercepts them at the surface — exactly where they gather — so they never reach the shell or the filter in the first place.
Crafted with a premium 3D air mesh skin that maximizes surface contact for superior absorption, Myrtle is reusable and washable, delivering powerful cleaning action with no chemicals and no hassle. It's one of the easiest upgrades you can make to your maintenance routine: just drop it in and let it work.
Hot Tub Serum®






















