This is a rare bacteria occurring in only 1.7% of all uBiome samples. Any bacteria genus < 5% I view as a probable overgrowth that should be reduced as a secondary target.
There are 80+ studies on PubMed. Most studies deal with it in soil.
- “Actinotignum schaalii subcutaneous abscesses in a patient with hidradenitis suppurativa: Case report and literature review .
“To date, A. urinale and A. massiliense have only been described in a few cases of human pathology, including urinary tract infections. ” 
- “. Thus, A. schaalii has often been considered as a nonpathogen bacterium or a contaminant. Its pathogenicity is now well described in urinary tract infections, and infections in other sites have been reported. ” 
- “Actinobaculum sp. HOT 183 was detected at 5.6% in the low-sugar group and at 6.9% in the reference group.” 
- ” randomized controlled trial of 91 adults with moderate gingivitis was designed with two anti-gingivitis regimens: the brush-alone treatment and the brush-plus-rinse treatment. and dental scaling…Only Actinobaculum, TM7 and Leptotrichia were consistently reduced by all the three treatments, ” 
- “The identification of this uropathogen is all the more important because it is resistant to trimethoprim/sulfamethoxazole and second-generation quinolones that are widely used in the treatment of UTIs. Antimicrobial therapy using β-lactams prolonged for up to 2 weeks is the most efficient treatment and should be recommended.” 
- “When an infection caused by A. schaalii is suspected, there is a risk of clinical failure by treating with ciprofloxacin or co-trimoxazole, and β-lactams should be preferred. In addition, acquired resistance to fluoroquinolones more active against Gram-positive bacteria is possible.” 
- Drinking urine (which appears to be high in it)
- Good dental care
- Low sugar diet