The Otis cleaning is an overpriced joke compared to a boresnake. I spent over $10,000 (stopped adding once i counted that high) last year on guns/ammo/accessories, as for the cleaning supplies, one boresnake for every caliber except .22, one cheapo $8 black box kit from academy (think its Winchester), a few bottles of rem oil and various Hoppes bottles, a cleaning mat and those silicone infused cloths.
I looked at a vid of the Otis product, it's laughable.
+1,000 on a boresnake.
Oh and lots and lots of time, esp if you have a 1911 that after two shots looks dirtier than my Walther after 500 rounds.