Read the maker's guidelines. Every cleaner is somewhat different. For it to be the best, you have to take what the directions say. For example, you may need to shower or scrub an answer on and abandon it for a timeframe. Restroom cleaners can be very overwhelming so ensure the room is all around ventilated and if essential, leave the space for an opportunity to avoid breathing in any explosive vapor.
6. Apply as coordinated. Leave the cleaner to sit, or scrub it in as organized by the maker. Try not to utilize metal or grating brush as it can harm your tub. For difficult to achieve places, take a stab at scrubbing using an old toothbrush and one of the previously mentioned cleaning items.