Butt Plug Guide for Beginners and Safety Tips

(these questions are from a total beginner’s standpoint using proper toys) As of today, I have begun experimenting with (proper) anal masturbation, using a butt plug which arrived today. However, after reading several guides, and having online advice both on this forum, and thanks to Google, I do still have a couple questions that I’m curious about. (just for reference, here is the butt plug I purchased)

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Firstly, is saliva an efficient lubricant? I’ve inserted household objects before, with a maximum diameter reaching around 1.7 inches, for these, i typically made sure they were clean, and used my saliva to make the process smoother - objects include ice cubes, bananas, and a kitchen roll holder for example. Secondly, I assume discomfort or pain is to be expected at first, even so, at what point after using a butt plug should it be safe to keep it in for extended periods? - Zero discomfort/pain, or safe enough as long as it doesn’t hurt sharply or any significant amount? Lastly, while I do not have an enema, I do tend to make sure my bowels are as clean as possible - naturally one cannot prevent the creation of poop, though as long as I’m careful and wash the toy thoroughly, is it safe to say that not using an enema should not pose a health hazard?

Many thanks guys, I’ve not been visiting as frequent right now, however I really appreciate the advice you have given so far. On a side note, purchased some stockings as well - which i’ve been wearing in place of socks and they feel extremely comfortable:D Edit: forgot to mention I had looked in here too… the referenced community page