Used Virosol for years, with good results. Watched some video clips of people using TFR, with good results. Some guy posted a TFR saying it was the dogs.
I noticed it had the clover in the corner (same as virosol) so I contacted Clover asking them which is better for what I do. This was the reply
The Magnum Force Extra product is more aggressive that the Viro-Sol, and must be diluted down more to prevent damage to surfaces. Both products must be rinsed off thoroughly after use.