The best thing with which to clean a hot tub is whatever the manufacturer recommends; in most cases, this is a gentle surface cleaner and a soft cloth. Recommended hot tub cleaners can include specially formulated cleaning agents, mild dish soap, baking soda, vinegar, or diluted bleach. For your hot tub exterior, choose wood or vinyl cleaner (depending on the casing material).

You should never use household cleaning products, harsh chemicals such as undiluted bleach or acids, or abrasive cleansers or cloths, as these can scratch or etch your hot tub’s coating or shell and cause permanent damage.

Whether or not a cleaner brings supplies also depends on their preference. Some cleaning services require the homeowner to supply cleaning products and a few basic materials (sponges, paper towels, rags, a mop, and vacuum, for example), but others bring everything they need to get in, clean, and get out.

You can always ask whether or not they bring their cleaning supplies, and if so, make sure you’re comfortable with what they use. If you prefer organic or natural products, for example, you may need to supply them or pay a premium.

Hydrogen peroxide is an effective stain remover for many kinds of stains on porcelain, ceramic, stone, and stainless steel sinks. Always consult your manufacturer’s instructions to ensure hydrogen peroxide won’t damage your sink. To remove stains with hydrogen peroxide, saturate the corner of a cloth or sponge with peroxide and gently dab at the stain until it lightens.

As a general rule of thumb, avoid handwashing dishes whenever possible—especially if you have a full sink. Using a dishwasher saves water and better sanitizes your dishes. However, if you have delicate dishwear, high-end glassware, or fragile plastics, you should opt to handwash it to avoid cracks, chips, or warping from the high heat of a dishwasher.