You can buy a camera with a USB attachment....then get the bulb kit for flushing. The camera is great...sells for under 40 on amazon.

https://aax-us-east.amazon-adsystem.com/x/c/Qh5bqgFQs7n0XVzweZ2IiUoAAAFyJsp-FQEAAAH2AYfCz98/https://www.amazon.com/gp/aw/d/B07PHWBNJT?pf_rd_p=8c64431f-0246-483d-bb4c-facbf9f65173&aaxitk=RYAji3pzD5QsirLx2Dfcng&hsa_cr_id=2264567710401&ref_=sb_s_sparkle