If / When I sanitize, I'm not using bleach. Bleach has a short shelf life, so if you are using bleach that is more than 6 months old, it isn't doing what you think it's doing. Use fresh bleach if you go this route. I also don't like having to rinse so much to get all the chlorine out.
Better than bleach, are the products that brewers use to sanitize their home brewing equipment. Most of them are 'no rinse' products. You drain and are done. I've used Star-San (
Beer and Wine Equipment Sanitizer - Northern Brewer) and PBW (
https://www.midwestsupplies.com/pbw-by-five-star )
Professional brewers use these to sanitize the tanks, lines and other gear responsible for keeping the beer we all drink from growing fur. It wont hurt plastic. I have a bunch of it on hand anyways, so I'm using PBW instead of bleach. Just something to think about in case you happen to be a home brewer, or have a dislike for Chlorine and excessive rinsing.
People have been using bleach for a long time and it definitely works, just wanted to point out it isn't the only game in town and their are better products that don't have the issues you get with bleach. The cost isn't bad, you don't have to fill your entire tank if you can slosh the solution around by driving around the block or whatever... just another option (better one in my opinion).