Mike from Tampa, Fl writes
Are there other products that are more effective for outdoor flea control on masonry surfaces and grass surfaces than Tengard? What provides the best residual effectiveness?
The Tengard SFR is a great product to use for flea control in outdoor areas and you would want to mix NyGuard IGR with the spray. The NyGuard works great on fleas, ticks and many other insects and last longer outdoors than any other IGR on the market. According to the manufacturer it can hold up to sunlight for about 5 months so you would just spray it with the innitial application of Tengard then use the Tengard by itself with your follow up sprays ever 14-30 days. You will typically use 4-8 ml of NyGuard per gallon of water.
Answer last updated on: 06/16/2013
