Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to use a bissell proheat pet [title] Pretreat your carpet with a spray-on pet stain remover. [step] This is best for discolored areas, heavy traffic areas or noticeable pet stains or smells. Leave it to sit while you prep the machine.

Ending1: [substeps] Make sure that it is sealed when you spray it on. Never apply this treatment directly on the carpet. Ending2: [substeps] You can buy stain removers at an auto parts store or home improvement store. If you don't have access to an expensive carpet treatment, seek specialty carpets cleaning products to treat stains. Ending3: [title] Lift the handle from the water compartment at the front of the proheat cleaner. [step] Pull up and take the container to your sink. Ending4: Then, let it cool so it can begin cleaning your carpet. [title] Run the machine on its highest power.

Answer format: ending1/ending2/ending3/ending4