"If amoxicillin or something related, it has a 100% kill rate."

"Amoxicillin is susceptible to degradation by β-lactamase-producing bacteria, which are resistant to most β-lactam antibiotics, such as penicillin. For this reason, it may be combined with clavulanic acid, a β-lactamase inhibitor. This drug combination is commonly called co-amoxiclav.[20]

Spectrum of activity

It is a moderate-spectrum, bacteriolytic, β-lactam antibiotic in the aminopenicillin family used to treat susceptible Gram-positive and Gram-negative bacteria. It is usually the drug of choice within the class because it is better-absorbed, following oral administration, than other β-lactam antibiotics. In general, Streptococcus, Bacillus subtilis, Enterococcus, Haemophilus, Helicobacter, and Moraxella are susceptible to amoxicillin, whereas Citrobacter, Klebsiella and Pseudomonas aeruginosa are resistant to it.[21] Some E. coli and most clinical strains of Staphylococcus aureus have developed resistance to amoxicillin to varying degrees."

Oh oopsies. Not even that combo works so well anymore.

https://wwwnc.cdc.gov/eid/article/14/8/07-1059_article

Last time I used antibiotics was about ~14 years ago?